1555

Names of 1555

• Cardinal: 1555 can be written as One thousand, five hundred fifty-five.

Scientific notation

• Scientific notation: 1.555 × 10³

Factors of 1555

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 316

Divisors of 1555

• Number of divisors d(n): 4
• Complete list of divisors:
  1 5 311 1555
• Sum of all divisors σ(n): 1872
• Sum of proper divisors (its aliquot sum) s(n): 317
• 1555 is a deficient number, because the sum of its proper divisors (317) is less than itself. Its deficiency is 1238

Bases of 1555

• Binary: 11000010011₂
• Hexadecimal: 0x613
• Base-36: 177

Squares and roots of 1555

• 1555 squared (1555²) is 2418025
• 1555 cubed (1555³) is 3760028875
• The square root of 1555 is 39.4334883063
• The cube root of 1555 is 11.5853759431

Scales and comparisons

• 1,555 seconds is equal to 25 minutes, 55 seconds.
• To count from 1 to 1,555 would take you about twenty-five minutes.

  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 1555 cubic inches would be around 1 feet tall.

Recreational maths with 1555

• 1555 backwards is 5551
• The number of decimal digits it has is: 4
• The sum of 1555's digits is 16
• More coming soon!