56388258 has 16 divisors (see below), whose sum is σ = 125307360. Its totient is φ = 18796068.

The previous prime is 56388253. The next prime is 56388281. The reversal of 56388258 is 85288365.

It is a happy number.

56388258 is a `hidden beast` number, since 5 + 638 + 8 + 2 + 5 + 8 = 666.

56388258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (56388253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522060 + ... + 522167.

It is an arithmetic number, because the mean of its divisors is an integer number (7831710).

Almost surely, 2^56388258 is an apocalyptic number.

56388258 is an abundant number, since it is smaller than the sum of its proper divisors (68919102).

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

56388258 is a wasteful number, since it uses less digits than its factorization.

56388258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044238 (or 1044232 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 56388258 is about 7509.2115431648. The cubic root of 56388258 is about 383.4683805630.

The spelling of 56388258 in words is "fifty-six million, three hundred eighty-eight thousand, two hundred fifty-eight".