557361 has 20 divisors (see below), whose sum is σ = 952512. Its totient is φ = 318168.

The previous prime is 557339. The next prime is 557369. The reversal of 557361 is 163755.

It is not a de Polignac number, because 557361 - 2⁵ = 557329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (557369) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 76 + ... + 1058.

2⁵⁵⁷³⁶¹ is an apocalyptic number.

It is an amenable number.

557361 is a deficient number, since it is larger than the sum of its proper divisors (395151).

557361 is an equidigital number, since it uses as much as digits as its factorization.

557361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002 (or 993 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 557361 is about 746.5661390661. The cubic root of 557361 is about 82.2960250287.

The spelling of 557361 in words is "five hundred fifty-seven thousand, three hundred sixty-one".