56138884 has 12 divisors (see below), whose sum is σ = 98388108. Its totient is φ = 28028000.

The previous prime is 56138869. The next prime is 56138897. The reversal of 56138884 is 48883165.

It can be written as a sum of positive squares in 2 ways, for example, as 23328900 + 32809984 = 4830^2 + 5728^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56138884.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7207 + ... + 12814.

It is an arithmetic number, because the mean of its divisors is an integer number (8199009).

Almost surely, 2^56138884 is an apocalyptic number.

It is an amenable number.

56138884 is a deficient number, since it is larger than the sum of its proper divisors (42249224).

56138884 is a wasteful number, since it uses less digits than its factorization.

56138884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20726 (or 20724 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The square root of 56138884 is about 7492.5886047480. The cubic root of 56138884 is about 382.9022558462.

The spelling of 56138884 in words is "fifty-six million, one hundred thirty-eight thousand, eight hundred eighty-four".