56791988 has 24 divisors (see below), whose sum is σ = 114129120. Its totient is φ = 24455520.

The previous prime is 56791979. The next prime is 56791993. The reversal of 56791988 is 88919765.

56791988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 33131 + ... + 34802.

It is an arithmetic number, because the mean of its divisors is an integer number (4755380).

Almost surely, 2^56791988 is an apocalyptic number.

It is an amenable number.

56791988 is an abundant number, since it is smaller than the sum of its proper divisors (57337132).

56791988 is a wasteful number, since it uses less digits than its factorization.

56791988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67967 (or 67965 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 53.

The square root of 56791988 is about 7536.0459128113. The cubic root of 56791988 is about 384.3813937113.

It can be divided in two parts, 5679 and 1988, that added together give a palindrome (7667).

The spelling of 56791988 in words is "fifty-six million, seven hundred ninety-one thousand, nine hundred eighty-eight".