21275

21,275 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21275 look like?

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

21275 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 21275:

5² × 23 × 37

(5 × 5 × 23 × 37)

See below for interesting mathematical facts about the number 21275 from the Numbermatics database.

Names of 21275

Cardinal: 21275 can be written as Twenty-one thousand, two hundred seventy-five.

Scientific notation

Scientific notation: 2.1275 × 10⁴

Factors of 21275

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 65

Divisors of 21275

Number of divisors d(n): 12
Complete list of divisors:
1 5 23 25 37 115 185 575 851 925 4255 21275
Sum of all divisors σ(n): 28272
Sum of proper divisors (its aliquot sum) s(n): 6997
21275 is a deficient number, because the sum of its proper divisors (6997) is less than itself. Its deficiency is 14278

Bases of 21275

Binary: 101001100011011₂
Hexadecimal: 0x531B
Base-36: GEZ

Squares and roots of 21275

21275 squared (21275²) is 452625625
21275 cubed (21275³) is 9629610171875
The square root of 21275 is 145.8595214583
The cube root of 21275 is 27.7091491021

Scales and comparisons

How big is 21275?

21,275 seconds is equal to 5 hours, 54 minutes, 35 seconds.
To count from 1 to 21,275 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 21275 cubic inches would be around 2.3 feet tall.

Recreational maths with 21275

21275 backwards is 57212
The number of decimal digits it has is: 5
The sum of 21275's digits is 17
More coming soon!

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The information we have on file for 21275 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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