56506920 has 32 divisors (see below), whose sum is σ = 169521120. Its totient is φ = 15068480.

The previous prime is 56506913. The next prime is 56506937. The reversal of 56506920 is 2960565.

56506920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235326 + ... + 235565.

It is an arithmetic number, because the mean of its divisors is an integer number (5297535).

Almost surely, 2^56506920 is an apocalyptic number.

It is an amenable number.

56506920 is an abundant number, since it is smaller than the sum of its proper divisors (113014200).

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

56506920 is a wasteful number, since it uses less digits than its factorization.

56506920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470905 (or 470901 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 56506920 is about 7517.1084866456. The cubic root of 56506920 is about 383.7371790997.

The spelling of 56506920 in words is "fifty-six million, five hundred six thousand, nine hundred twenty".