55685672 has 32 divisors (see below), whose sum is σ = 123179520. Its totient is φ = 23094720.

The previous prime is 55685657. The next prime is 55685681. The reversal of 55685672 is 27658655.

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 7 ways as a sum of consecutive naturals, for example, 14303 + ... + 17774.

It is an arithmetic number, because the mean of its divisors is an integer number (3849360).

Almost surely, 2^55685672 is an apocalyptic number.

It is an amenable number.

55685672 is an abundant number, since it is smaller than the sum of its proper divisors (67493848).

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

55685672 is a wasteful number, since it uses less digits than its factorization.

55685672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32121 (or 32117 counting only the distinct ones).

The product of its digits is 504000, while the sum is 44.

The square root of 55685672 is about 7462.2832966861. The cubic root of 55685672 is about 381.8690742168.

The spelling of 55685672 in words is "fifty-five million, six hundred eighty-five thousand, six hundred seventy-two".