56490256 has 15 divisors (see below), whose sum is σ = 109508151. Its totient is φ = 28230096.

The previous prime is 56490253. The next prime is 56490257. The reversal of 56490256 is 65209465.

The square root of 56490256 is 7516.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×56490256² = 6382298045891072, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56490253) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 29125 + ... + 31003.

Almost surely, 2^56490256 is an apocalyptic number.

56490256 is the 7516-th square number.

It is an amenable number.

56490256 is a deficient number, since it is larger than the sum of its proper divisors (53017895).

56490256 is an frugal number, since it uses more digits than its factorization.

56490256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766 (or 1881 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The cubic root of 56490256 is about 383.6994537789.

The spelling of 56490256 in words is "fifty-six million, four hundred ninety thousand, two hundred fifty-six".