55390168 has 32 divisors (see below), whose sum is σ = 109771200. Its totient is φ = 26129952.

The previous prime is 55390157. The next prime is 55390177. The reversal of 55390168 is 86109355.

It is a super-2 number, since 2×55390168² = 6136141422136448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46071 + ... + 47257.

It is an arithmetic number, because the mean of its divisors is an integer number (3430350).

Almost surely, 2^55390168 is an apocalyptic number.

It is an amenable number.

55390168 is a deficient number, since it is larger than the sum of its proper divisors (54381032).

55390168 is a wasteful number, since it uses less digits than its factorization.

55390168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1515 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 55390168 is about 7442.4571211395. The cubic root of 55390168 is about 381.1923948440.

The spelling of 55390168 in words is "fifty-five million, three hundred ninety thousand, one hundred sixty-eight".