56509328 has 10 divisors (see below), whose sum is σ = 109486854. Its totient is φ = 28254656.

The previous prime is 56509319. The next prime is 56509331. The reversal of 56509328 is 82390565.

It can be written as a sum of positive squares in only one way, i.e., 30824704 + 25684624 = 5552^2 + 5068^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56509291 and 56509300.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765901 + ... + 1765932.

Almost surely, 2^56509328 is an apocalyptic number.

It is an amenable number.

56509328 is a deficient number, since it is larger than the sum of its proper divisors (52977526).

56509328 is a wasteful number, since it uses less digits than its factorization.

56509328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531841 (or 3531835 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 56509328 is about 7517.2686529084. The cubic root of 56509328 is about 383.7426299129.

The spelling of 56509328 in words is "fifty-six million, five hundred nine thousand, three hundred twenty-eight".