56403456 has 40 divisors (see below), whose sum is σ = 150266424. Its totient is φ = 18800640.

The previous prime is 56403449. The next prime is 56403497. The reversal of 56403456 is 65430465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16825 + ... + 19896.

Almost surely, 2^56403456 is an apocalyptic number.

It is an amenable number.

56403456 is an abundant number, since it is smaller than the sum of its proper divisors (93862968).

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

56403456 is an equidigital number, since it uses as much as digits as its factorization.

56403456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36742 (or 36726 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 56403456 is about 7510.2234320957. The cubic root of 56403456 is about 383.5028288042.

The spelling of 56403456 in words is "fifty-six million, four hundred three thousand, four hundred fifty-six".