21005055

21,005,055 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21005055 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 16 divisors.

21005055 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 21005055:

3³ × 5 × 155593

(3 × 3 × 3 × 5 × 155593)

See below for interesting mathematical facts about the number 21005055 from the Numbermatics database.

Names of 21005055

Cardinal: 21005055 can be written as Twenty-one million, five thousand and fifty-five.

Scientific notation

Scientific notation: 2.1005055 × 10⁷

Factors of 21005055

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 5
Sum of prime factors: 155601

Divisors of 21005055

Number of divisors d(n): 16
Complete list of divisors:
1 3 5 9 15 27 45 135 155593 466779 777965 1400337 2333895 4201011 7001685 21005055
Sum of all divisors σ(n): 37342560
Sum of proper divisors (its aliquot sum) s(n): 16337505
21005055 is a deficient number, because the sum of its proper divisors (16337505) is less than itself. Its deficiency is 4667550

Bases of 21005055

Binary: 1010000001000001011111111₂
Hexadecimal: 0x14082FF
Base-36: CI7LR

Squares and roots of 21005055

21005055 squared (21005055²) is 441212335553025
21005055 cubed (21005055³) is 9267689374969745541375
The square root of 21005055 is 4583.1272074863
The cube root of 21005055 is 275.9145529441

Scales and comparisons

How big is 21005055?

21,005,055 seconds is equal to 34 weeks, 5 days, 2 hours, 44 minutes, 15 seconds.
To count from 1 to 21,005,055 would take you about sixteen hours!

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 21005055 cubic inches would be around 23 feet tall.

Recreational maths with 21005055

21005055 backwards is 55050012
The number of decimal digits it has is: 8
The sum of 21005055's digits is 18
More coming soon!

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The information we have on file for 21005055 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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