56641900 has 36 divisors (see below), whose sum is σ = 140473648. Its totient is φ = 19419840.

The previous prime is 56641853. The next prime is 56641919. The reversal of 56641900 is 914665.

It is a super-2 number, since 2×56641900² = 6416609671220000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39759 + ... + 41158.

Almost surely, 2^56641900 is an apocalyptic number.

56641900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56641900 is an abundant number, since it is smaller than the sum of its proper divisors (83831748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56641900 is a wasteful number, since it uses less digits than its factorization.

56641900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80938 (or 80931 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 56641900 is about 7526.0813176579. The cubic root of 56641900 is about 384.0424848104.

The spelling of 56641900 in words is "fifty-six million, six hundred forty-one thousand, nine hundred".