51981440
51,981,440 is an even composite number composed of five prime numbers multiplied together.
51981440 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 51981440:
27 × 5 × 7 × 41 × 283
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 41 × 283)See below for interesting mathematical facts about the number 51981440 from the Numbermatics database.
Names of 51981440
- Cardinal: 51981440 can be written as Fifty-one million, nine hundred eighty-one thousand, four hundred forty.
Scientific notation
- Scientific notation: 5.198144 × 107
Factors of 51981440
Divisors of 51981440
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 32 35 40 41 56 64 70 80 82 112 128 140 160 164 205 224 280 283 287 320 328 410 448 560 566 574 640 656 820 896 1120 1132 1148 1312 1415 1435 1640 1981 2240 2264 2296 2624 2830 2870 3280 3962 4480 4528 4592 5248 5660 5740 6560 7924 9056 9184 9905 11320 11480 11603 13120 15848 18112 18368 19810 22640 22960 23206 26240 31696 36224 36736 39620 45280 45920 46412 58015 63392 79240 81221 90560 91840 92824 116030 126784 158480 162442 181120 183680 185648 232060 253568 316960 324884 371296 406105 464120 633920 649768 742592 812210 928240 1267840 1299536 1485184 1624420 1856480 2599072 3248840 3712960 5198144 6497680 7425920 10396288 12995360 25990720 51981440
- Sum of all divisors σ(n): 145998720
- Sum of proper divisors (its aliquot sum) s(n): 94017280
- 51981440 is an abundant number, because the sum of its proper divisors (94017280) is greater than itself. Its abundance is 42035840
Bases of 51981440
- Binary: 110001100100101100100000002
- Hexadecimal: 0x3192C80
- Base-36: UY54W
Squares and roots of 51981440
- 51981440 squared (519814402) is 2702070104473600
- 51981440 cubed (519814403) is 140457495011488169984000
-
The
square root of 51981440 is 7209.8155316209 -
The
cube root of 51981440 is 373.2067030851
Scales and comparisons
How big is 51981440?- 51,981,440 seconds is equal to 1 year, 33 weeks, 6 days, 15 hours, 17 minutes, 20 seconds.
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To count from 1 to 51,981,440 would take you about two 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 51981440 cubic inches would be around 31.1 feet tall.
Recreational maths with 51981440
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