557320 has 16 divisors (see below), whose sum is σ = 1254060. Its totient is φ = 222912.

The previous prime is 557309. The next prime is 557321. The reversal of 557320 is 23755.

It can be written as a sum of positive squares in 2 ways, for example, as 509796 + 47524 = 714^2 + 218^2 .

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 557291 and 557300.

It is not an unprimeable number, because it can be changed into a prime (557321) by changing a digit.

557320 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 3 ways as a sum of consecutive naturals, for example, 6927 + ... + 7006.

2⁵⁵⁷³²⁰ is an apocalyptic number.

It is an amenable number.

557320 is an abundant number, since it is smaller than the sum of its proper divisors (696740).

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

557320 is a wasteful number, since it uses less digits than its factorization.

557320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13944 (or 13940 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 557320 is about 746.5386795070. The cubic root of 557320 is about 82.2940070548.

The spelling of 557320 in words is "five hundred fifty-seven thousand, three hundred twenty".