55055172 has 24 divisors (see below), whose sum is σ = 128594592. Its totient is φ = 18332800.

The previous prime is 55055167. The next prime is 55055191. The reversal of 55055172 is 27155055.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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, 14647 + ... + 18017.

It is an arithmetic number, because the mean of its divisors is an integer number (5358108).

Almost surely, 2^55055172 is an apocalyptic number.

It is an amenable number.

55055172 is an abundant number, since it is smaller than the sum of its proper divisors (73539420).

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

55055172 is a wasteful number, since it uses less digits than its factorization.

55055172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739 (or 4737 counting only the distinct ones).

The product of its (nonzero) digits is 8750, while the sum is 30.

The square root of 55055172 is about 7419.9172502124. The cubic root of 55055172 is about 380.4223650911.

The spelling of 55055172 in words is "fifty-five million, fifty-five thousand, one hundred seventy-two".