557172 has 96 divisors (see below), whose sum is σ = 1827840. Its totient is φ = 142560.

The previous prime is 557159. The next prime is 557197. The reversal of 557172 is 271755.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (2450) is a multiple of the sum of its prime factors (98).

It is a congruent number.

It is an unprimeable number.

557172 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 31 ways as a sum of consecutive naturals, for example, 8283 + ... + 8349.

It is an arithmetic number, because the mean of its divisors is an integer number (19040).

2⁵⁵⁷¹⁷² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (913920).

557172 is an abundant number, since it is smaller than the sum of its proper divisors (1270668).

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

557172 is a wasteful number, since it uses less digits than its factorization.

557172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 90 counting only the distinct ones).

The product of its digits is 2450, while the sum is 27.

The square root of 557172 is about 746.4395487915. The cubic root of 557172 is about 82.2867218379.

It can be divided in two parts, 557 and 172, that added together give a 6-th power (729 = 3⁶).

The spelling of 557172 in words is "five hundred fifty-seven thousand, one hundred seventy-two".