56637642 has 48 divisors (see below), whose sum is σ = 122014080. Its totient is φ = 17521152.

The previous prime is 56637631. The next prime is 56637643. The reversal of 56637642 is 24673665.

It is a self number, because there is not a number n which added to its sum of digits gives 56637642.

It is not an unprimeable number, because it can be changed into a prime (56637643) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 154143 + ... + 154509.

It is an arithmetic number, because the mean of its divisors is an integer number (2541960).

Almost surely, 2^56637642 is an apocalyptic number.

56637642 is an abundant number, since it is smaller than the sum of its proper divisors (65376438).

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

56637642 is a wasteful number, since it uses less digits than its factorization.

56637642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 478 counting only the distinct ones).

The product of its digits is 181440, while the sum is 39.

The square root of 56637642 is about 7525.7984294027. The cubic root of 56637642 is about 384.0328612286.

The spelling of 56637642 in words is "fifty-six million, six hundred thirty-seven thousand, six hundred forty-two".