55172 has 12 divisors (see below), whose sum is σ = 104076. Its totient is φ = 25440.

The previous prime is 55171. The next prime is 55201. The reversal of 55172 is 27155.

55172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 21316 + 33856 = 146^2 + 184^2 .

It is not an unprimeable number, because it can be changed into a prime (55171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479 + ... + 582.

It is an arithmetic number, because the mean of its divisors is an integer number (8673).

2⁵⁵¹⁷² is an apocalyptic number.

55172 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55172 is a deficient number, since it is larger than the sum of its proper divisors (48904).

55172 is a wasteful number, since it uses less digits than its factorization.

55172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078 (or 1076 counting only the distinct ones).

The product of its digits is 350, while the sum is 20.

The square root of 55172 is about 234.8872069739. The cubic root of 55172 is about 38.0691262529.

The spelling of 55172 in words is "fifty-five thousand, one hundred seventy-two".