55584172 has 24 divisors (see below), whose sum is σ = 111345920. Its totient is φ = 23783760.

The previous prime is 55584167. The next prime is 55584181. The reversal of 55584172 is 27148555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22897 + ... + 25207.

Almost surely, 2^55584172 is an apocalyptic number.

It is an amenable number.

55584172 is an abundant number, since it is smaller than the sum of its proper divisors (55761748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55584172 is a wasteful number, since it uses less digits than its factorization.

55584172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181 (or 3179 counting only the distinct ones).

The product of its digits is 56000, while the sum is 37.

The square root of 55584172 is about 7455.4793273136. The cubic root of 55584172 is about 381.6369182418.

It can be divided in two parts, 5558 and 4172, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 55584172 in words is "fifty-five million, five hundred eighty-four thousand, one hundred seventy-two".