21055

Names of 21055

• Cardinal: 21055 can be written as Twenty-one thousand and fifty-five.

Scientific notation

• Scientific notation: 2.1055 × 10⁴

Factors of 21055

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 4216

Divisors of 21055

• Number of divisors d(n): 4
• Complete list of divisors:
  1 5 4211 21055
• Sum of all divisors σ(n): 25272
• Sum of proper divisors (its aliquot sum) s(n): 4217
• 21055 is a deficient number, because the sum of its proper divisors (4217) is less than itself. Its deficiency is 16838

Bases of 21055

• Binary: 101001000111111₂
• Hexadecimal: 0x523F
• Base-36: G8V

Squares and roots of 21055

• 21055 squared (21055²) is 443313025
• 21055 cubed (21055³) is 9333955741375
• The square root of 21055 is 145.1034114003
• The cube root of 21055 is 27.6133066131

Scales and comparisons

• 21,055 seconds is equal to 5 hours, 50 minutes, 55 seconds.
• To count from 1 to 21,055 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 21055 cubic inches would be around 2.3 feet tall.

Recreational maths with 21055

• 21055 backwards is 55012
• The number of decimal digits it has is: 5
• The sum of 21055's digits is 13
• More coming soon!