557028 has 18 divisors (see below), whose sum is σ = 1408134. Its totient is φ = 185664.

The previous prime is 557027. The next prime is 557033. The reversal of 557028 is 820755.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 459684 + 97344 = 678^2 + 312^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 556992 and 557010.

It is not an unprimeable number, because it can be changed into a prime (557021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7701 + ... + 7772.

2⁵⁵⁷⁰²⁸ is an apocalyptic number.

It is an amenable number.

557028 is an abundant number, since it is smaller than the sum of its proper divisors (851106).

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

557028 is a wasteful number, since it uses less digits than its factorization.

557028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15483 (or 15478 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 557028 is about 746.3430846467. The cubic root of 557028 is about 82.2796322803.

The spelling of 557028 in words is "five hundred fifty-seven thousand, twenty-eight".