21550

21,550 is an even composite number composed of three prime numbers multiplied together.

What does the number 21550 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

21550 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 21550:

2 × 5² × 431

(2 × 5 × 5 × 431)

See below for interesting mathematical facts about the number 21550 from the Numbermatics database.

Names of 21550

Cardinal: 21550 can be written as Twenty-one thousand, five hundred fifty.

Scientific notation

Scientific notation: 2.155 × 10⁴

Factors of 21550

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 438

Divisors of 21550

Number of divisors d(n): 12
Complete list of divisors:
1 2 5 10 25 50 431 862 2155 4310 10775 21550
Sum of all divisors σ(n): 40176
Sum of proper divisors (its aliquot sum) s(n): 18626
21550 is a deficient number, because the sum of its proper divisors (18626) is less than itself. Its deficiency is 2924

Bases of 21550

Binary: 101010000101110₂
Hexadecimal: 0x542E
Base-36: GMM

Squares and roots of 21550

21550 squared (21550²) is 464402500
21550 cubed (21550³) is 10007873875000
The square root of 21550 is 146.7991825591
The cube root of 21550 is 27.8280275623

Scales and comparisons

How big is 21550?

21,550 seconds is equal to 5 hours, 59 minutes, 10 seconds.
To count from 1 to 21,550 would take you about five 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 21550 cubic inches would be around 2.3 feet tall.

Recreational maths with 21550

21550 backwards is 05512
The number of decimal digits it has is: 5
The sum of 21550's digits is 13
More coming soon!

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The information we have on file for 21550 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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