21175 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighteen divisors.
Prime factorization of 21175:
52 × 7 × 112
(5 × 5 × 7 × 11 × 11)
52 × 7 × 112(5 × 5 × 7 × 11 × 11)
See below for interesting mathematical facts about the number 21175 from the Numbermatics database.
Names of 21175
- Cardinal: 21175 can be written as Twenty-one thousand, one hundred seventy-five.
- Scientific notation: 2.1175 × 104
Factors of 21175
- Number of distinct prime factors ω(n): 3
- Total number of prime factors Ω(n): 5
- Sum of prime factors: 23
Divisors of 21175
- Number of divisors d(n): 18
- Complete list of divisors:
- Sum of all divisors σ(n): 32984
- Sum of proper divisors (its aliquot sum) s(n): 11809
- 21175 is a deficient number, because the sum of its proper divisors (11809) is less than itself. Its deficiency is 9366
Bases of 21175
- Binary: 1010010101101112
- Hexadecimal: 0x52B7
- Base-36: GC7
Squares and roots of 21175
- 21175 squared (211752) is 448380625
- 21175 cubed (211753) is 9494459734375
square rootof 21175 is 145.5163221085
cube rootof 21175 is 27.6656666467
Scales and comparisonsHow big is 21175?
- 21,175 seconds is equal to 5 hours, 52 minutes, 55 seconds.
To count from 1 to 21,175 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 21175 cubic inches would be around 2.3 feet tall.
Recreational maths with 21175
- 21175 backwards is 57112
- The number of decimal digits it has is: 5
- The sum of 21175's digits is 16
- More coming soon!
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Cite this page
"Number 21175 - Facts about the integer". Numbermatics.com. 2019. Web. 14 October 2019.
Numbermatics. (2019). Number 21175 - Facts about the integer. Retrieved 14 October 2019, from https://numbermatics.com/n/21175/
Numbermatics. 2019. "Number 21175 - Facts about the integer". https://numbermatics.com/n/21175/
The information we have on file for 21175 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!