655172 has 12 divisors (see below), whose sum is σ = 1310400. Its totient is φ = 280776.

The previous prime is 655157. The next prime is 655181. The reversal of 655172 is 271556.

655172 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11672 + ... + 11727.

It is an arithmetic number, because the mean of its divisors is an integer number (109200).

2⁶⁵⁵¹⁷² is an apocalyptic number.

It is an amenable number.

655172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

655172 is a wasteful number, since it uses less digits than its factorization.

655172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23410 (or 23408 counting only the distinct ones).

The product of its digits is 2100, while the sum is 26.

The square root of 655172 is about 809.4269577917. The cubic root of 655172 is about 86.8530571015.

The spelling of 655172 in words is "six hundred fifty-five thousand, one hundred seventy-two".