551172 has 24 divisors (see below), whose sum is σ = 1342656. Its totient is φ = 175648.

The previous prime is 551143. The next prime is 551179. The reversal of 551172 is 271155.

It is not an unprimeable number, because it can be changed into a prime (551179) by changing a digit.

551172 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723 + ... + 1274.

It is an arithmetic number, because the mean of its divisors is an integer number (55944).

2⁵⁵¹¹⁷² is an apocalyptic number.

It is an amenable number.

551172 is an abundant number, since it is smaller than the sum of its proper divisors (791484).

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

551172 is a wasteful number, since it uses less digits than its factorization.

551172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027 (or 2025 counting only the distinct ones).

The product of its digits is 350, while the sum is 21.

The square root of 551172 is about 742.4095904553. The cubic root of 551172 is about 81.9902824098.

The spelling of 551172 in words is "five hundred fifty-one thousand, one hundred seventy-two".