55231688 has 32 divisors (see below), whose sum is σ = 105636960. Its totient is φ = 27068160.

The previous prime is 55231679. The next prime is 55231699. The reversal of 55231688 is 88613255.

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, 96443 + ... + 97013.

It is an arithmetic number, because the mean of its divisors is an integer number (3301155).

Almost surely, 2^55231688 is an apocalyptic number.

It is an amenable number.

55231688 is a deficient number, since it is larger than the sum of its proper divisors (50405272).

55231688 is a wasteful number, since it uses less digits than its factorization.

55231688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 793 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 55231688 is about 7431.8024731555. The cubic root of 55231688 is about 380.8284970612.

The spelling of 55231688 in words is "fifty-five million, two hundred thirty-one thousand, six hundred eighty-eight".