55544172 has 24 divisors (see below), whose sum is σ = 135238656. Its totient is φ = 17709648.

The previous prime is 55544147. The next prime is 55544173. The reversal of 55544172 is 27144555.

It is not an unprimeable number, because it can be changed into a prime (55544173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100348 + ... + 100899.

It is an arithmetic number, because the mean of its divisors is an integer number (5634944).

Almost surely, 2^55544172 is an apocalyptic number.

It is an amenable number.

55544172 is an abundant number, since it is smaller than the sum of its proper divisors (79694484).

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

55544172 is a wasteful number, since it uses less digits than its factorization.

55544172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201277 (or 201275 counting only the distinct ones).

The product of its digits is 28000, while the sum is 33.

The square root of 55544172 is about 7452.7962537560. The cubic root of 55544172 is about 381.5453505678.

The spelling of 55544172 in words is "fifty-five million, five hundred forty-four thousand, one hundred seventy-two".