56481900 has 36 divisors (see below), whose sum is σ = 163421832. Its totient is φ = 15061760.

The previous prime is 56481899. The next prime is 56481917. The reversal of 56481900 is 918465.

It is a super-2 number, since 2×56481900² = 6380410055220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93837 + ... + 94436.

Almost surely, 2^56481900 is an apocalyptic number.

56481900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56481900 is an abundant number, since it is smaller than the sum of its proper divisors (106939932).

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

56481900 is a wasteful number, since it uses less digits than its factorization.

56481900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188290 (or 188283 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 56481900 is about 7515.4440986545. Note that the first 3 decimals coincide. The cubic root of 56481900 is about 383.6805339925.

The spelling of 56481900 in words is "fifty-six million, four hundred eighty-one thousand, nine hundred".