21525

21,525 is an odd composite number composed of four prime numbers multiplied together.

What does the number 21525 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

21525 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 21525:

3 × 5² × 7 × 41

(3 × 5 × 5 × 7 × 41)

See below for interesting mathematical facts about the number 21525 from the Numbermatics database.

Names of 21525

Cardinal: 21525 can be written as Twenty-one thousand, five hundred twenty-five.

Scientific notation

Scientific notation: 2.1525 × 10⁴

Factors of 21525

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 56

Divisors of 21525

Number of divisors d(n): 24
Complete list of divisors:
1 3 5 7 15 21 25 35 41 75 105 123 175 205 287 525 615 861 1025 1435 3075 4305 7175 21525
Sum of all divisors σ(n): 41664
Sum of proper divisors (its aliquot sum) s(n): 20139
21525 is a deficient number, because the sum of its proper divisors (20139) is less than itself. Its deficiency is 1386

Bases of 21525

Binary: 101010000010101₂
Hexadecimal: 0x5415
Base-36: GLX

Squares and roots of 21525

21525 squared (21525²) is 463325625
21525 cubed (21525³) is 9973084078125
The square root of 21525 is 146.7140075113
The cube root of 21525 is 27.8172623665

Scales and comparisons

How big is 21525?

21,525 seconds is equal to 5 hours, 58 minutes, 45 seconds.
To count from 1 to 21,525 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 21525 cubic inches would be around 2.3 feet tall.

Recreational maths with 21525

21525 backwards is 52512
21525 is a Harshad number.
The number of decimal digits it has is: 5
The sum of 21525's digits is 15
More coming soon!

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The information we have on file for 21525 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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