56453980 has 24 divisors (see below), whose sum is σ = 129331440. Its totient is φ = 20528640.

The previous prime is 56453933. The next prime is 56453993. The reversal of 56453980 is 8935465.

It is a congruent number.

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, 128085 + ... + 128524.

It is an arithmetic number, because the mean of its divisors is an integer number (5388810).

Almost surely, 2^56453980 is an apocalyptic number.

It is an amenable number.

56453980 is an abundant number, since it is smaller than the sum of its proper divisors (72877460).

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

56453980 is a wasteful number, since it uses less digits than its factorization.

56453980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256629 (or 256627 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 56453980 is about 7513.5863607202. The cubic root of 56453980 is about 383.6173035529.

The spelling of 56453980 in words is "fifty-six million, four hundred fifty-three thousand, nine hundred eighty".