56022138 has 16 divisors (see below), whose sum is σ = 124493760. Its totient is φ = 18674028.

The previous prime is 56022133. The next prime is 56022149. The reversal of 56022138 is 83122065.

56022138 is a `hidden beast` number, since 5 + 602 + 21 + 38 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (56022133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518670 + ... + 518777.

It is an arithmetic number, because the mean of its divisors is an integer number (7780860).

Almost surely, 2^56022138 is an apocalyptic number.

56022138 is an abundant number, since it is smaller than the sum of its proper divisors (68471622).

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

56022138 is a wasteful number, since it uses less digits than its factorization.

56022138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037458 (or 1037452 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 56022138 is about 7484.7937847345. The cubic root of 56022138 is about 382.6366447584.

The spelling of 56022138 in words is "fifty-six million, twenty-two thousand, one hundred thirty-eight".