557130 has 48 divisors (see below), whose sum is σ = 1559520. Its totient is φ = 127008.

The previous prime is 557093. The next prime is 557153. The reversal of 557130 is 31755.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 557097 and 557106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1281 + ... + 1659.

It is an arithmetic number, because the mean of its divisors is an integer number (32490).

2⁵⁵⁷¹³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779760).

557130 is an abundant number, since it is smaller than the sum of its proper divisors (1002390).

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

557130 is a wasteful number, since it uses less digits than its factorization.

557130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 557130 is about 746.4114147037. The cubic root of 557130 is about 82.2846541764.

Adding to 557130 its reverse (31755), we get a palindrome (588885).

The spelling of 557130 in words is "five hundred fifty-seven thousand, one hundred thirty".