557128 has 32 divisors (see below), whose sum is σ = 1229760. Its totient is φ = 233280.

The previous prime is 557093. The next prime is 557153. The reversal of 557128 is 821755.

It is a junction number, because it is equal to n+sod(n) for n = 557096 and 557105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901 + ... + 1387.

It is an arithmetic number, because the mean of its divisors is an integer number (38430).

2⁵⁵⁷¹²⁸ 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 557128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614880).

557128 is an abundant number, since it is smaller than the sum of its proper divisors (672632).

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

557128 is a wasteful number, since it uses less digits than its factorization.

557128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 513 counting only the distinct ones).

The product of its digits is 2800, while the sum is 28.

The square root of 557128 is about 746.4100749588. The cubic root of 557128 is about 82.2845557138.

The spelling of 557128 in words is "five hundred fifty-seven thousand, one hundred twenty-eight".