21355155

21,355,155 is an odd composite number composed of five prime numbers multiplied together.

What does the number 21355155 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 48 divisors.

21355155 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 21355155:

3² × 5 × 23 × 47 × 439

(3 × 3 × 5 × 23 × 47 × 439)

See below for interesting mathematical facts about the number 21355155 from the Numbermatics database.

Names of 21355155

Cardinal: 21355155 can be written as Twenty-one million, three hundred fifty-five thousand, one hundred fifty-five.

Scientific notation

Scientific notation: 2.1355155 × 10⁷

Factors of 21355155

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 517

Divisors of 21355155

Number of divisors d(n): 48
Complete list of divisors:
1 3 5 9 15 23 45 47 69 115 141 207 235 345 423 439 705 1035 1081 1317 2115 2195 3243 3951 5405 6585 9729 10097 16215 19755 20633 30291 48645 50485 61899 90873 103165 151455 185697 309495 454365 474559 928485 1423677 2372795 4271031 7118385 21355155
Sum of all divisors σ(n): 39536640
Sum of proper divisors (its aliquot sum) s(n): 18181485
21355155 is a deficient number, because the sum of its proper divisors (18181485) is less than itself. Its deficiency is 3173670

Bases of 21355155

Binary: 1010001011101101010010011₂
Hexadecimal: 0x145DA93
Base-36: CPPQR

Squares and roots of 21355155

21355155 squared (21355155²) is 456042645074025
21355155 cubed (21355155³) is 9738861372165790348875
The square root of 21355155 is 4621.1638144519
The cube root of 21355155 is 277.4390418819

Scales and comparisons

How big is 21355155?

21,355,155 seconds is equal to 35 weeks, 2 days, 3 hours, 59 minutes, 15 seconds.
To count from 1 to 21,355,155 would take you about six days!

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 21355155 cubic inches would be around 23.1 feet tall.

Recreational maths with 21355155

21355155 backwards is 55155312
The number of decimal digits it has is: 8
The sum of 21355155's digits is 27
More coming soon!

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The information we have on file for 21355155 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!

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