557228 has 18 divisors (see below), whose sum is σ = 1134756. Its totient is φ = 238728.

The previous prime is 557201. The next prime is 557261. The reversal of 557228 is 822755.

It is a self number, because there is not a number n which added to its sum of digits gives 557228.

It is an unprimeable number.

557228 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 5 ways as a sum of consecutive naturals, for example, 1226 + ... + 1617.

It is an arithmetic number, because the mean of its divisors is an integer number (63042).

2⁵⁵⁷²²⁸ is an apocalyptic number.

It is an amenable number.

557228 is an abundant number, since it is smaller than the sum of its proper divisors (577528).

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

557228 is a wasteful number, since it uses less digits than its factorization.

557228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861 (or 2852 counting only the distinct ones).

The product of its digits is 5600, while the sum is 29.

The square root of 557228 is about 746.4770592590. The cubic root of 557228 is about 82.2894785581.

The spelling of 557228 in words is "five hundred fifty-seven thousand, two hundred twenty-eight".