55121168 has 20 divisors (see below), whose sum is σ = 108393360. Its totient is φ = 27148704.

The previous prime is 55121159. The next prime is 55121201. The reversal of 55121168 is 86112155.

It is a self number, because there is not a number n which added to its sum of digits gives 55121168.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24638 + ... + 26781.

It is an arithmetic number, because the mean of its divisors is an integer number (5419668).

Almost surely, 2^55121168 is an apocalyptic number.

It is an amenable number.

55121168 is a deficient number, since it is larger than the sum of its proper divisors (53272192).

55121168 is a wasteful number, since it uses less digits than its factorization.

55121168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51494 (or 51488 counting only the distinct ones).

The product of its digits is 2400, while the sum is 29.

The square root of 55121168 is about 7424.3631376705. The cubic root of 55121168 is about 380.5743116343.

The spelling of 55121168 in words is "fifty-five million, one hundred twenty-one thousand, one hundred sixty-eight".