55233172 has 12 divisors (see below), whose sum is σ = 98019936. Its totient is φ = 27227480.

The previous prime is 55233161. The next prime is 55233181. The reversal of 55233172 is 27133255.

It is a self number, because there is not a number n which added to its sum of digits gives 55233172.

It is a congruent number.

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, 96958 + ... + 97525.

It is an arithmetic number, because the mean of its divisors is an integer number (8168328).

Almost surely, 2^55233172 is an apocalyptic number.

It is an amenable number.

55233172 is a deficient number, since it is larger than the sum of its proper divisors (42786764).

55233172 is a wasteful number, since it uses less digits than its factorization.

55233172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194558 (or 194556 counting only the distinct ones).

The product of its digits is 6300, while the sum is 28.

The square root of 55233172 is about 7431.9023136745. The cubic root of 55233172 is about 380.8319078111.

The spelling of 55233172 in words is "fifty-five million, two hundred thirty-three thousand, one hundred seventy-two".