81,401 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 81401 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

81401 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 81401:


See below for interesting mathematical facts about the number 81401 from the Numbermatics database.

Names of 81401

  • Cardinal: 81401 can be written as Eighty-one thousand, four hundred one.

Scientific notation

  • Scientific notation: 8.1401 × 104

Factors of 81401

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 81401

Divisors of 81401

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 81402
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 81401 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 81400

Bases of 81401

  • Binary: 100111101111110012
  • Hexadecimal: 0x13DF9
  • Base-36: 1QT5

Squares and roots of 81401

  • 81401 squared (814012) is 6626122801
  • 81401 cubed (814013) is 539373022124201
  • The square root of 81401 is 285.3086048475
  • The cube root of 81401 is 43.3387698637

Scales and comparisons

How big is 81401?
  • 81,401 seconds is equal to 22 hours, 36 minutes, 41 seconds.
  • To count from 1 to 81,401 would take you about twenty-two 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 81401 cubic inches would be around 3.6 feet tall.

Recreational maths with 81401

  • 81401 backwards is 10418
  • The number of decimal digits it has is: 5
  • The sum of 81401's digits is 14
  • More coming soon!

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The information we have on file for 81401 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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