55644165 has 20 divisors (see below), whose sum is σ = 99748044. Its totient is φ = 29676672.

The previous prime is 55644151. The next prime is 55644187. The reversal of 55644165 is 56144655.

55644165 is a `hidden beast` number, since 5 + 5 + 644 + 1 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37675044 + 17969121 = 6138^2 + 4239^2 .

It is not a de Polignac number, because 55644165 - 2⁸ = 55643909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 68292 + ... + 69101.

Almost surely, 2^55644165 is an apocalyptic number.

It is an amenable number.

55644165 is a deficient number, since it is larger than the sum of its proper divisors (44103879).

55644165 is a wasteful number, since it uses less digits than its factorization.

55644165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137410 (or 137401 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 55644165 is about 7459.5016589582. The cubic root of 55644165 is about 381.7741714116.

The spelling of 55644165 in words is "fifty-five million, six hundred forty-four thousand, one hundred sixty-five".