15961

15,961 is an odd composite number composed of two prime numbers multiplied together.

What does the number 15961 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

15961 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 15961:

11 × 1451

See below for interesting mathematical facts about the number 15961 from the Numbermatics database.

Names of 15961

Cardinal: 15961 can be written as Fifteen thousand, nine hundred sixty-one.

Scientific notation

Scientific notation: 1.5961 × 10⁴

Factors of 15961

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 1462

Divisors of 15961

Number of divisors d(n): 4
Complete list of divisors:
1 11 1451 15961
Sum of all divisors σ(n): 17424
Sum of proper divisors (its aliquot sum) s(n): 1463
15961 is a deficient number, because the sum of its proper divisors (1463) is less than itself. Its deficiency is 14498

Bases of 15961

Binary: 11111001011001₂
Hexadecimal: 0x3E59
Base-36: CBD

Squares and roots of 15961

15961 squared (15961²) is 254753521
15961 cubed (15961³) is 4066120948681
The square root of 15961 is 126.3368513143
The cube root of 15961 is 25.1779306237

Scales and comparisons

How big is 15961?

15,961 seconds is equal to 4 hours, 26 minutes, 1 second.
To count from 1 to 15,961 would take you about four 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 15961 cubic inches would be around 2.1 feet tall.

Recreational maths with 15961

15961 backwards is 16951
The number of decimal digits it has is: 5
The sum of 15961's digits is 22
More coming soon!

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The information we have on file for 15961 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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