51491

Names of 51491

• Cardinal: 51491 can be written as Fifty-one thousand, four hundred ninety-one.

Scientific notation

• Scientific notation: 5.1491 × 10⁴

Factors of 51491

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 193

Divisors of 51491

• Number of divisors d(n): 8
• Complete list of divisors:
  1 11 31 151 341 1661 4681 51491
• Sum of all divisors σ(n): 58368
• Sum of proper divisors (its aliquot sum) s(n): 6877
• 51491 is a deficient number, because the sum of its proper divisors (6877) is less than itself. Its deficiency is 44614

Bases of 51491

• Binary: 1100100100100011₂
• Hexadecimal: 0xC923
• Base-36: 13QB

Squares and roots of 51491

• 51491 squared (51491²) is 2651323081
• 51491 cubed (51491³) is 136519276763771
• The square root of 51491 is 226.9162841225
• The cube root of 51491 is 37.2029268903

Scales and comparisons

• 51,491 seconds is equal to 14 hours, 18 minutes, 11 seconds.
• To count from 1 to 51,491 would take you about fourteen 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 51491 cubic inches would be around 3.1 feet tall.

Recreational maths with 51491

• 51491 backwards is 19415
• The number of decimal digits it has is: 5
• The sum of 51491's digits is 20
• More coming soon!