55866172 has 24 divisors (see below), whose sum is σ = 102426912. Its totient is φ = 26611200.

The previous prime is 55866169. The next prime is 55866227. The reversal of 55866172 is 27166855.

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, 24772 + ... + 26932.

It is an arithmetic number, because the mean of its divisors is an integer number (4267788).

Almost surely, 2^55866172 is an apocalyptic number.

It is an amenable number.

55866172 is a deficient number, since it is larger than the sum of its proper divisors (46560740).

55866172 is a wasteful number, since it uses less digits than its factorization.

55866172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469 (or 2467 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 55866172 is about 7474.3676655621. The cubic root of 55866172 is about 382.2812270820.

The spelling of 55866172 in words is "fifty-five million, eight hundred sixty-six thousand, one hundred seventy-two".