56133640 has 32 divisors (see below), whose sum is σ = 126826560. Its totient is φ = 22360000.

The previous prime is 56133587. The next prime is 56133667. The reversal of 56133640 is 4633165.

It is a junction number, because it is equal to n+sod(n) for n = 56133599 and 56133608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7245 + ... + 12835.

It is an arithmetic number, because the mean of its divisors is an integer number (3963330).

Almost surely, 2^56133640 is an apocalyptic number.

It is an amenable number.

56133640 is an abundant number, since it is smaller than the sum of its proper divisors (70692920).

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

56133640 is a wasteful number, since it uses less digits than its factorization.

56133640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5853 (or 5849 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 56133640 is about 7492.2386507639. The cubic root of 56133640 is about 382.8903330231.

The spelling of 56133640 in words is "fifty-six million, one hundred thirty-three thousand, six hundred forty".