55190172 has 48 divisors (see below), whose sum is σ = 132596352. Its totient is φ = 17858880.

The previous prime is 55190167. The next prime is 55190189. The reversal of 55190172 is 27109155.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 67647 + ... + 68457.

It is an arithmetic number, because the mean of its divisors is an integer number (2762424).

Almost surely, 2^55190172 is an apocalyptic number.

It is an amenable number.

55190172 is an abundant number, since it is smaller than the sum of its proper divisors (77406180).

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

55190172 is a wasteful number, since it uses less digits than its factorization.

55190172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 55190172 is about 7429.0088167938. The cubic root of 55190172 is about 380.7330540312.

The spelling of 55190172 in words is "fifty-five million, one hundred ninety thousand, one hundred seventy-two".