56755920 has 80 divisors (see below), whose sum is σ = 189487872. Its totient is φ = 13969920.

The previous prime is 56755913. The next prime is 56755957. The reversal of 56755920 is 2955765.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5976 + ... + 12215.

Almost surely, 2^56755920 is an apocalyptic number.

It is an amenable number.

56755920 is an abundant number, since it is smaller than the sum of its proper divisors (132731952).

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

56755920 is a wasteful number, since it uses less digits than its factorization.

56755920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18220 (or 18214 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 56755920 is about 7533.6525006135. The cubic root of 56755920 is about 384.3000042726.

It can be divided in two parts, 56755 and 920, that added together give a palindrome (57675).

The spelling of 56755920 in words is "fifty-six million, seven hundred fifty-five thousand, nine hundred twenty".