56122578 has 16 divisors (see below), whose sum is σ = 124716960. Its totient is φ = 18707508.

The previous prime is 56122567. The next prime is 56122603. The reversal of 56122578 is 87522165.

It is a happy number.

56122578 is a `hidden beast` number, since 5 + 61 + 22 + 578 = 666.

56122578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56122578² = 6299487522732168, which contains 22 as substring.

It is an unprimeable number.

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, 519600 + ... + 519707.

It is an arithmetic number, because the mean of its divisors is an integer number (7794810).

Almost surely, 2^56122578 is an apocalyptic number.

56122578 is an abundant number, since it is smaller than the sum of its proper divisors (68594382).

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

56122578 is a wasteful number, since it uses less digits than its factorization.

56122578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039318 (or 1039312 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 56122578 is about 7491.5003837683. The cubic root of 56122578 is about 382.8651798878.

The spelling of 56122578 in words is "fifty-six million, one hundred twenty-two thousand, five hundred seventy-eight".