55165772 has 24 divisors (see below), whose sum is σ = 100808400. Its totient is φ = 26381376.

The previous prime is 55165763. The next prime is 55165811. The reversal of 55165772 is 27756155.

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, 10463 + ... + 14825.

It is an arithmetic number, because the mean of its divisors is an integer number (4200350).

Almost surely, 2^55165772 is an apocalyptic number.

It is an amenable number.

55165772 is a deficient number, since it is larger than the sum of its proper divisors (45642628).

55165772 is a wasteful number, since it uses less digits than its factorization.

55165772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505 (or 4503 counting only the distinct ones).

The product of its digits is 73500, while the sum is 38.

The square root of 55165772 is about 7427.3664242449. The cubic root of 55165772 is about 380.6769374223.

The spelling of 55165772 in words is "fifty-five million, one hundred sixty-five thousand, seven hundred seventy-two".