55637904 has 40 divisors (see below), whose sum is σ = 164265280. Its totient is φ = 15896448.

The previous prime is 55637873. The next prime is 55637951. The reversal of 55637904 is 40973655.

55637904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 82459 + ... + 83130.

It is an arithmetic number, because the mean of its divisors is an integer number (4106632).

Almost surely, 2^55637904 is an apocalyptic number.

It is an amenable number.

55637904 is an abundant number, since it is smaller than the sum of its proper divisors (108627376).

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

55637904 is a wasteful number, since it uses less digits than its factorization.

55637904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165607 (or 165601 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 55637904 is about 7459.0819810483. The cubic root of 55637904 is about 381.7598519841.

The spelling of 55637904 in words is "fifty-five million, six hundred thirty-seven thousand, nine hundred four".