56578356 has 18 divisors (see below), whose sum is σ = 143017602. Its totient is φ = 18859440.

The previous prime is 56578349. The next prime is 56578369. The reversal of 56578356 is 65387565.

56578356 is a `hidden beast` number, since 565 + 7 + 83 + 5 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 44675856 + 11902500 = 6684^2 + 3450^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×56578356² = 6402220735325472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 785775 + ... + 785846.

Almost surely, 2^56578356 is an apocalyptic number.

It is an amenable number.

56578356 is an abundant number, since it is smaller than the sum of its proper divisors (86439246).

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

56578356 is a wasteful number, since it uses less digits than its factorization.

56578356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571631 (or 1571626 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 56578356 is about 7521.8585469284. The cubic root of 56578356 is about 383.8988177423.

The spelling of 56578356 in words is "fifty-six million, five hundred seventy-eight thousand, three hundred fifty-six".