531845116604153856
531,845,116,604,153,856 is an even composite number composed of five prime numbers multiplied together.
531845116604153856 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one thousand, nine hundred twenty divisors.
Prime factorization of 531845116604153856:
215 × 33 × 72 × 1034 × 109
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 7 × 7 × 103 × 103 × 103 × 103 × 109)See below for interesting mathematical facts about the number 531845116604153856 from the Numbermatics database.
Names of 531845116604153856
- Cardinal: 531845116604153856 can be written as Five hundred thirty-one quadrillion, eight hundred forty-five trillion, one hundred sixteen billion, six hundred four million, one hundred fifty-three thousand, eight hundred fifty-six.
Scientific notation
- Scientific notation: 5.31845116604153856 × 1017
Factors of 531845116604153856
Divisors of 531845116604153856
- Number of divisors d(n): 1920
-
Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 49 54 56 63 64 72 84 96 98 103 108 109 112 126 128 144 147 168 189 192 196 206 216 218 224 252 256 288 294 309 327 336 378 384 392 412 432 436 441 448 504 512 576 588 618 654 672 721 756 763 768 784 824 864 872 882 896 927 981 1008 1024 1152 1176 1236 1308 1323 1344 1442 1512 1526 1536 1568 1648 1728 1744 1764 1792 1854 1962 2016 2048 2163 2289 2304 2352 2472 2616 2646 2688 2781 2884 2943 3024 3052 3072 3136 3296 3456 3488 3528 3584 3708 3924 4032 4096 4326 4578 4608 4704 4944 5047 5232 5292 5341 5376 5562 5768 5886 6048 6104 6144 6272 6489 6592 6867 6912 6976 7056 7168 7416 7848 8064 8192 8652 9156 9216 9408 9888 10094 10464 10584 10609 10682 10752 11124 11227 11536 11772 12096 12208 12288 12544 12978 13184 13734 13824 13952 14112 14336 14832 15141 15696 16023 16128 16384 17304 18312 18432 18816 19467 19776 20188 20601 20928 21168 21218 21364 21504 22248 22454 23072 23544 24192 24416 24576 25088 25956 26368 27468 27648 27904 28224 28672 29664 30282 31392 31827 32046 32256 32768 33681 34608 36624 36864 37632 38934 39552 40376 41202 41856 42336 42436 42728 43008 44496 44908 45423 46144 47088 48069 48384 48832 49152 50176 51912 52736 54936 55296 55808 56448 57344 59328 60564 62784 63654 64092 64512 67362 69216 73248 73728 74263 75264 77868 78589 79104 80752 82404 83712 84672 84872 85456 86016 88992 89816 90846 92288 94176 95481 96138 96768 97664 98304 100352 101043 103824 105472 109872 110592 111616 112896 114688 118656 121128 125568 127308 128184 129024 134724 136269 138432 144207 146496 147456 148526 150528 155736 157178 158208 161504 164808 167424 169344 169744 170912 172032 177984 179632 181692 184576 188352 190962 192276 193536 195328 200704 202086 207648 210944 219744 221184 222789 223232 225792 229376 235767 237312 242256 251136 254616 256368 258048 269448 272538 276864 286443 288414 292992 294912 297052 301056 303129 311472 314356 316416 323008 329616 334848 338688 339488 341824 344064 355968 359264 363384 369152 376704 381924 384552 387072 390656 401408 404172 415296 421888 439488 442368 445578 446464 451584 471534 474624 484512 502272 509232 512736 516096 519841 538896 545076 550123 553728 572886 576828 585984 594104 602112 606258 622944 628712 632832 646016 659232 668367 669696 677376 678976 683648 688128 707301 711936 718528 726768 738304 753408 763848 769104 774144 781312 802816 808344 830592 843776 878976 884736 891156 892928 903168 943068 949248 969024 1004544 1018464 1025472 1032192 1039682 1077792 1090152 1092727 1100246 1107456 1145772 1153656 1156381 1171968 1188208 1204224 1212516 1245888 1257424 1265664 1292032 1318464 1336734 1339392 1354752 1357952 1367296 1414602 1423872 1437056 1453536 1476608 1506816 1527696 1538208 1548288 1559523 1562624 1605632 1616688 1650369 1661184 1687552 1757952 1782312 1785856 1806336 1886136 1898496 1938048 2005101 2009088 2036928 2050944 2064384 2079364 2121903 2155584 2180304 2185454 2200492 2214912 2291544 2307312 2312762 2343936 2376416 2408448 2425032 2491776 2514848 2531328 2584064 2636928 2673468 2678784 2709504 2715904 2734592 2829204 2847744 2874112 2907072 2953216 3013632 3055392 3076416 3096576 3119046 3125248 3233376 3278181 3300738 3322368 3375104 3469143 3515904 3564624 3571712 3612672 3772272 3796992 3876096 4010202 4018176 4073856 4101888 4158728 4243806 4311168 4360608 4370908 4400984 4429824 4583088 4614624 4625524 4678569 4687872 4752832 4816896 4850064 4951107 4983552 5029696 5062656 5168128 5273856 5346936 5357568 5419008 5431808 5469184 5658408 5695488 5748224 5814144 5906432 6027264 6110784 6152832 6193152 6238092 6250496 6466752 6556362 6601476 6644736 6938286 7031808 7129248 7225344 7544544 7593984 7649089 7752192 8020404 8036352 8094667 8147712 8203776 8317456 8487612 8622336 8721216 8741816 8801968 8859648 9166176 9229248 9251048 9357138 9375744 9505664 9700128 9834543 9902214 9967104 10059392 10125312 10336256 10407429 10547712 10693872 10715136 10838016 10863616 10938368 11316816 11390976 11496448 11628288 11812864 12054528 12221568 12305664 12476184 12500992 12933504 13112724 13202952 13289472 13876572 14035707 14063616 14258496 14450688 14853321 15089088 15187968 15298178 15504384 16040808 16072704 16189334 16295424 16407552 16634912 16975224 17244672 17442432 17483632 17603936 17719296 18332352 18458496 18502096 18714276 18751488 19011328 19400256 19669086 19804428 19934208 20118784 20672512 20814858 21095424 21387744 21676032 21727232 21876736 22633632 22781952 22947267 22992896 23256576 23625728 24109056 24284001 24443136 24611328 24952368 25001984 25867008 26225448 26405904 26578944 27753144 28071414 28127232 28516992 29503629 29706642 30178176 30375936 30596356 31008768 31222287 32081616 32145408 32378668 32590848 32815104 33269824 33950448 34489344 34884864 34967264 35207872 35438592 36664704 36916992 37004192 37428552 37502976 38022656 38800512 39338172 39608856 39868416 40237568 41345024 41629716 42190848 42775488 43352064 43454464 43753472 45267264 45563904 45894534 45985792 46513152 48218112 48568002 48886272 49222656 49904736 51734016 52450896 52811808 53157888 53543623 55506288 56142828 56254464 56662669 57033984 59007258 59413284 60356352 61192712 62017536 62444574 64163232 64757336 65181696 65630208 66539648 67900896 68841801 68978688 69769728 69934528 70415744 70877184 72852003 73329408 73833984 74008384 74857104 75005952 76045312 77601024 78676344 79217712 79736832 80475136 82690048 83259432 84381696 85550976 86908928 87506944 90534528 91127808 91789068 91971584 93026304 96436224 97136004 97772544 98445312 99809472 103468032 104901792 105623616 106315776 107087246 111012576 112285656 112508928 112550881 113325338 114067968 118014516 118826568 119107243 120712704 122385424 124035072 124889148 128326464 129514672 130363392 131260416 133079296 135801792 137683602 137957376 139539456 139869056 140831488 145704006 146658816 147667968 148016768 149714208 152090624 155202048 157352688 158435424 159473664 160630869 160950272 165380096 166518864 168763392 169988007 171101952 173817856 175013888 181069056 183578136 183943168 186052608 194272008 195545088 196890624 199618944 206525403 206936064 209803584 211247232 212631552 214174492 218556009 222025152 224571312 225017856 225101762 226650676 228135936 236029032 237653136 238214486 241425408 244770848 248070144 249778296 256652928 259029344 260726784 262520832 266158592 271603584 275367204 275914752 279078912 279738112 281662976 291408012 293317632 295335936 296033536 299428416 304181248 310404096 314705376 316870848 318947328 321261738 321900544 333037728 337526784 337652643 339976014 342203904 347635712 357321729 362138112 367156272 367886336 372105216 388544016 391090176 393781248 399237888 413050806 413872128 419607168 422494464 428348984 437112018 444050304 449142624 450203524 453301352 456271872 472058064 475306272 476428972 481892607 482850816 489541696 496140288 499556592 509964021 513305856 518058688 521453568 525041664 532317184 543207168 550734408 551829504 558157824 559476224 563325952 582816024 586635264 590671872 592067072 598856832 608362496 620808192 629410752 633741696 637894656 642523476 643801088 666075456 675053568 675305286 679952028 684407808 714643458 724276224 734312544 744210432 777088032 782180352 787562496 787856167 798475776 826101612 827744256 833750701 839214336 844988928 856697968 874224036 888100608 898285248 900407048 906602704 912543744 944116128 950612544 952857944 963785214 965701632 979083392 999113184 1012957929 1019928042 1026611712 1036117376 1042907136 1064634368 1071965187 1086414336 1101468816 1103659008 1116315648 1118952448 1126651904 1165632048 1173270528 1181343744 1184134144 1197713664 1216724992 1241616384 1258821504 1267483392 1285046952 1287602176 1332150912 1350610572 1359904056 1368815616 1429286916 1445677821 1448552448 1468625088 1488420864 1529892063 1554176064 1564360704 1575124992 1575712334 1596951552 1652203224 1655488512 1667501402 1678428672 1689977856 1713395936 1748448072 1776201216 1796570496 1800814096 1813205408 1825087488 1888232256 1901225088 1905715888 1927570428 1931403264 1958166784 1998226368 2025915858 2039856084 2053223424 2072234752 2129268736 2143930374 2172828672 2202937632 2232631296 2237904896 2253303808 2331264096 2346541056 2362687488 2363568501 2368268288 2395427328 2433449984 2483232768 2501252103 2517643008 2534966784 2570093904 2575204352 2664301824 2701221144 2719808112 2737631232 2858573832 2891355642 2897104896 2937250176 3038873787 3059784126 3108352128 3128721408 3151424668 3193903104 3215895561 3304406448 3310977024 3335002804 3356857344 3379955712 3426791872 3496896144 3552402432 3593140992 3601628192 3626410816 3650174976 3776464512 3802450176 3811431776 3855140856 3862806528 3916333568 3996452736 4051831716 4079712168 4106446848 4144469504 4258537472 4287860748 4345657344 4405875264 4465262592 4475809792 4506607616 4662528192 4693082112 4725374976 4727137002 4736536576 4790854656 4966465536 5002504206 5035286016 5069933568 5140187808 5328603648 5402442288 5439616224 5475262464 5514993169 5717147664 5782711284 5794209792 5836254907 5874500352 6077747574 6119568252 6216704256 6302849336 6387806208 6431791122 6608812896 6670005608 6713714688 6759911424 6853583744 6993792288 7090705503 7104804864 7186281984 7203256384 7252821632 7300349952 7503756309 7552929024 7604900352 7622863552 7710281712 7725613056 7832667136 7992905472 8103663432 8159424336 8212893696 8288939008 8517074944 8575721496 8691314688 8811750528 8951619584 9013215232 9325056384 9386164224 9454274004 9473073152 9581709312 9932931072 10005008412 10070572032 10139867136 10280375616 10657207296 10804884576 10879232448 10950524928 11029986338 11434295328 11565422568 11588419584 11672509814 11749000704 12155495148 12239136504 12268046029 12433408512 12605698672 12775612416 12863582244 13217625792 13340011216 13427429376 13519822848 13707167488 13987584576 14181411006 14209609728 14372563968 14406512768 14505643264 15007512618 15105858048 15209800704 15245727104 15420563424 15665334272 15985810944 16207326864 16318848672 16425787392 16544979507 16577878016 17034149888 17151442992 17382629376 17508764721 17623501056 17903239168 18026430464 18650112768 18908548008 18946146304 19163418624 20010016824 20141144064 20279734272 20560751232 21272116509 21314414592 21609769152 21758464896 21901049856 22059972676 22511268927 22868590656 23130845136 23176839168 23345019628 23498001408 24310990296 24478273008 24536092058 24866817024 25211397344 25551224832 25727164488 26435251584 26680022432 26854858752 27039645696 27414334976 27975169152 28362822012 28419219456 28745127936 28813025536 29011286528 30015025236 30211716096 30419601408 30491454208 30841126848 31330668544 31971621888 32414653728 32637697344 32851574784 33089959014 33155756032 34302885984 34765258752 35017529442 35247002112 35806478336 36804138087 37300225536 37817096016 37892292608 38326837248 40020033648 40282288128 40559468544 41121502464 42544233018 42628829184 43219538304 43516929792 44119945352 45022537854 45737181312 46261690272 46690039256 46996002816 48621980592 48956546016 49072184116 49634938521 49733634048 50422794688 51102449664 51454328976 52526294163 52870503168 53360044864 53709717504 54079291392 54828669952 55950338304 56725644024 56838438912 57490255872 57626051072 58022573056 60030050472 60423432192 60839202816 60982908416 61682253696 62661337088 63943243776 64829307456 65275394688 65703149568 66179918028 66311512064 68605771968 69530517504 70035058884 70494004224 73608276174 74600451072 75634192032 76653674496 80040067296 80564576256 81118937088 82243004928 85088466036 85257658368 85876322203 86439076608 87033859584 88239890704 90045075708 91474362624 92523380544 93380078512 93992005632 97243961184 97913092032 98144368232 99269877042 99467268096 100845589376 102908657952 105052588326 105741006336 106720089728 107419435008 109657339904 110412414261 111900676608 113451288048 113676877824 114980511744 115252102144 116045146112 120060100944 120846864384 121678405632 121965816832 123364507392 125322674176 127886487552 129658614912 130550789376 132359836056 132623024128 137211543936 140070117768 140988008448 147216552348 148904815563 149200902144 151268384064 153307348992 157578882489 160080134592 161129152512 162237874176 164486009856 170176932072 170515316736 171752644406 172878153216 174067719168 176479781408 180090151416 182948725248 185046761088 186760157024 187984011264 194487922368 195826184064 196288736464 198539754084 198934536192 201691178752 205817315904 210105176652 211482012672 213440179456 219314679808 220824828522 223801353216 226902576096 229961023488 230504204288 232090292224 240120201888 241693728768 243356811264 243931633664 246729014784 250645348352 255772975104 257628966609 259317229824 261101578752 264719672112 265246048256 274423087872 280140235536 281976016896 294433104696 297809631126 298401804288 302536768128 315157764978 320160269184 322258305024 328972019712 331237242783 340353864144 341030633472 343505288812 345756306432 348135438336 352959562816 360180302832 365897450496 370093522176 373520314048 375968022528 388975844736 391652368128 392577472928 397079508168 397869072384 403382357504 411634631808 420210353304 422964025344 426880358912 438629359616 441649657044 447602706432 453805152192 459922046976 461008408576 464180584448 480240403776 483387457536 486713622528 487863267328 493458029568 511545950208 515257933218 518634459648 522203157504 529439344224 548846175744 560280471072 563952033792 588866209392 595619262252 596803608576 601134255421 605073536256 630315529956 640320538368 657944039424 662474485566 680707728288 687010577624 691512612864 696270876672 705919125632 720360605664 731794900992 740187044352 747040628096 751936045056 772886899827 777951689472 783304736256 785154945856 794159016336 795738144768 806764715008 823269263616 840420706608 845928050688 853760717824 877258719232 883299314088 895205412864 907610304384 922016817152 928361168896 960480807552 966774915072 975726534656 986916059136 1023091900416 1030515866436 1037268919296 1044406315008 1058878688448 1097692351488 1120560942144 1127904067584 1177732418784 1191238524504 1193607217152 1202268510842 1210147072512 1260631059912 1280641076736 1315888078848 1324948971132 1361415456576 1374021155248 1383025225728 1392541753344 1411838251264 1440721211328 1463589801984 1480374088704 1494081256192 1545773799654 1555903378944 1566609472512 1570309891712 1588318032672 1613529430016 1646538527232 1680841413216 1691856101376 1707521435648 1754517438464 1766598628176 1790410825728 1803402766263 1815220608768 1844033634304 1856722337792 1920961615104 1951453069312 1973832118272 2061031732872 2074537838592 2088812630016 2117757376896 2195384702976 2241121884288 2255808135168 2318660699481 2355464837568 2382477049008 2387214434304 2404537021684 2420294145024 2521262119824 2561282153472 2631776157696 2649897942264 2722830913152 2748042310496 2766050451456 2785083506688 2823676502528 2881442422656 2927179603968 2960748177408 2988162512384 3091547599308 3111806757888 3133218945024 3140619783424 3176636065344 3227058860032 3293077054464 3361682826432 3383712202752 3415042871296 3533197256352 3580821651456 3606805532526 3630441217536 3688067268608 3841923230208 3902906138624 3947664236544 4122063465744 4149075677184 4177625260032 4235514753792 4390769405952 4482243768576 4637321398962 4710929675136 4764954098016 4809074043368 4840588290048 5042524239648 5122564306944 5263552315392 5299795884528 5410208298789 5445661826304 5496084620992 5532100902912 5570167013376 5647353005056 5762884845312 5854359207936 5921496354816 5976325024768 6183095198616 6223613515776 6266437890048 6281239566848 6353272130688 6454117720064 6586154108928 6723365652864 6767424405504 6830085742592 7066394512704 7161643302912 7213611065052 7260882435072 7683846460416 7895328473088 8244126931488 8298151354368 8355250520064 8471029507584 8781538811904 8964487537152 9274642797924 9421859350272 9529908196032 9618148086736 9681176580096 10085048479296 10245128613888 10599591769056 10820416597578 10891323652608 10992169241984 11064201805824 11294706010112 11525769690624 11708718415872 11842992709632 11952650049536 12366190397232 12447227031552 12532875780096 12562479133696 12706544261376 12908235440128 13172308217856 13446731305728 13660171485184 14132789025408 14427222130104 14521764870144 15367692920832 15790656946176 16230624896367 16488253862976 16596302708736 16710501040128 16942059015168 17563077623808 17928975074304 18549285595848 18843718700544 19059816392064 19236296173472 19362353160192 20170096958592 20490257227776 21199183538112 21640833195156 21782647305216 21984338483968 22589412020224 23051539381248 23685985419264 23905300099072 24732380794464 24894454063104 25065751560192 25124958267392 25413088522752 25816470880256 26344616435712 26893462611456 27320342970368 28265578050816 28854444260208 29043529740288 30735385841664 32461249792734 32976507725952 33192605417472 33884118030336 35126155247616 35857950148608 37098571191696 37687437401088 38119632784128 38472592346944 38724706320384 40340193917184 40980514455552 42398367076224 43281666390312 43565294610432 43968676967936 45178824040448 46103078762496 47371970838528 47810600198144 49464761588928 49788908126208 50131503120384 50249916534784 50826177045504 52689232871424 53786925222912 56531156101632 57708888520416 58087059480576 61470771683328 64922499585468 65953015451904 67768236060672 71715900297216 74197142383392 75374874802176 76239265568256 76945184693888 77449412640768 80680387834368 81961028911104 84796734152448 86563332780624 87130589220864 87937353935872 90357648080896 92206157524992 95621200396288 98929523177856 99577816252416 100499833069568 101652354091008 105378465742848 107573850445824 113062312203264 115417777040832 116174118961152 122941543366656 129844999170936 131906030903808 135536472121344 143431800594432 148394284766784 150749749604352 152478531136512 153890369387776 161360775668736 169593468304896 173126665561248 174261178441728 175874707871744 180715296161792 184412315049984 191242400792576 197859046355712 200999666139136 203304708182016 215147700891648 226124624406528 230835554081664 232348237922304 245883086733312 259689998341872 263812061807616 271072944242688 286863601188864 296788569533568 301499499208704 304957062273024 307780738775552 322721551337472 339186936609792 346253331122496 348522356883456 351749415743488 368824630099968 395718092711424 401999332278272 406609416364032 430295401783296 452249248813056 461671108163328 519379996683744 527624123615232 542145888485376 573727202377728 593577139067136 602998998417408 609914124546048 615561477551104 645443102674944 678373873219584 692506662244992 697044713766912 703498831486976 737649260199936 791436185422848 813218832728064 860590803566592 904498497626112 923342216326656 1038759993367488 1055248247230464 1187154278134272 1205997996834816 1219828249092096 1231122955102208 1290886205349888 1356747746439168 1385013324489984 1406997662973952 1582872370845696 1626437665456128 1721181607133184 1808996995252224 1846684432653312 2077519986734976 2110496494460928 2374308556268544 2439656498184192 2462245910204416 2581772410699776 2713495492878336 2770026648979968 2813995325947904 3165744741691392 3617993990504448 3693368865306624 4155039973469952 4220992988921856 4748617112537088 4879312996368384 4924491820408832 5163544821399552 5426990985756672 5540053297959936 6331489483382784 7386737730613248 8310079946939904 8441985977843712 9497234225074176 9848983640817664 10853981971513344 11080106595919872 12662978966765568 14773475461226496 16620159893879808 18994468450148352 19697967281635328 22160213191839744 25325957933531136 29546950922452992 33240319787759616 37988936900296704 44320426383679488 59093901844905984 66480639575519232 75977873800593408 88640852767358976 132961279151038464 177281705534717952 265922558302076928 531845116604153856
- Sum of all divisors σ(n): 1868042650425138000
- Sum of proper divisors (its aliquot sum) s(n): 1336197533820984144
- 531845116604153856 is an abundant number, because the sum of its proper divisors (1336197533820984144) is greater than itself. Its abundance is 804352417216830288
Bases of 531845116604153856
- Binary: 111011000010111111001010000110100101011011110000000000000002
- Hexadecimal: 0x7617E50D2B78000
- Base-36: 41GRCXLS4QO0
Squares and roots of 531845116604153856
- 531845116604153856 squared (5318451166041538562) is 282859228055686011617336473719668736
- 531845116604153856 cubed (5318451166041538563) is 150437299127837274643225751120342797426673905897046016
-
The
square root of 531845116604153856 is 729277119.2106289139 -
The
cube root of 531845116604153856 is 810205.2604862413
Scales and comparisons
How big is 531845116604153856?- 531,845,116,604,153,856 seconds is equal to 16,911,029,603 years, 2 weeks, 5 days, 57 minutes, 36 seconds.
-
To count from 1 to 531,845,116,604,153,856 would take you about fifty billion, seven hundred thirty-three million, eighty-eight thousand, eight hundred nine years!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 531845116604153856 cubic inches would be around 67517.1 feet tall.
Recreational maths with 531845116604153856
- 531845116604153856 backwards is 658351406611548135
- 531845116604153856 is a
Harshad number . - The number of decimal digits it has is: 18
- The sum of 531845116604153856's digits is 72
- More coming soon!
Link to this page
HTML: To link to this page, just copy and paste the link below into your blog, web page or email.
BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:
Cite this page
MLA style:
"Number 531845116604153856 - Facts about the integer". Numbermatics.com. 2024. Web. 30 May 2024.
APA style:
Numbermatics. (2024). Number 531845116604153856 - Facts about the integer. Retrieved 30 May 2024, from https://numbermatics.com/n/531845116604153856/
Chicago style:
Numbermatics. 2024. "Number 531845116604153856 - Facts about the integer". https://numbermatics.com/n/531845116604153856/
The information we have on file for 531845116604153856 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
Keywords: Divisors of 531845116604153856, math, Factors of 531845116604153856, curriculum, school, college, exams, university, Prime factorization of 531845116604153856, STEM, science, technology, engineering, physics, economics, calculator, five hundred thirty-one quadrillion, eight hundred forty-five trillion, one hundred sixteen billion, six hundred four million, one hundred fifty-three thousand, eight hundred fifty-six.