56137920 has 56 divisors (see below), whose sum is σ = 178240944. Its totient is φ = 14969856.

The previous prime is 56137909. The next prime is 56137933. The reversal of 56137920 is 2973165.

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, 28279 + ... + 30198.

It is an arithmetic number, because the mean of its divisors is an integer number (3182874).

Almost surely, 2^56137920 is an apocalyptic number.

It is an amenable number.

56137920 is an abundant number, since it is smaller than the sum of its proper divisors (122103024).

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

56137920 is a wasteful number, since it uses less digits than its factorization.

56137920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58497 (or 58487 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 56137920 is about 7492.5242742350. The cubic root of 56137920 is about 382.9000641396.

The spelling of 56137920 in words is "fifty-six million, one hundred thirty-seven thousand, nine hundred twenty".