56545980 has 24 divisors (see below), whose sum is σ = 158328912. Its totient is φ = 15078912.

The previous prime is 56545943. The next prime is 56545987. The reversal of 56545980 is 8954565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56545987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471157 + ... + 471276.

It is an arithmetic number, because the mean of its divisors is an integer number (6597038).

Almost surely, 2^56545980 is an apocalyptic number.

It is an amenable number.

56545980 is an abundant number, since it is smaller than the sum of its proper divisors (101782932).

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

56545980 is a wasteful number, since it uses less digits than its factorization.

56545980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942445 (or 942443 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 56545980 is about 7519.7061112786. The cubic root of 56545980 is about 383.8255772517.

The spelling of 56545980 in words is "fifty-six million, five hundred forty-five thousand, nine hundred eighty".