30565056 has 28 divisors (see below), whose sum is σ = 80870552. Its totient is φ = 10188288.

The previous prime is 30565019. The next prime is 30565061. The reversal of 30565056 is 65056503.

It is an alternating number because its digits alternate between odd and even.

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, 79405 + ... + 79788.

It is an arithmetic number, because the mean of its divisors is an integer number (2888234).

Almost surely, 2^30565056 is an apocalyptic number.

It is an amenable number.

30565056 is an abundant number, since it is smaller than the sum of its proper divisors (50305496).

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

30565056 is a wasteful number, since it uses less digits than its factorization.

30565056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159208 (or 159198 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 30565056 is about 5528.5672646717. The cubic root of 30565056 is about 312.6619738451.

The spelling of 30565056 in words is "thirty million, five hundred sixty-five thousand, fifty-six".