557523 has 10 divisors (see below), whose sum is σ = 832964. Its totient is φ = 371628.

The previous prime is 557521. The next prime is 557533. The reversal of 557523 is 325755.

It is not a de Polignac number, because 557523 - 2¹ = 557521 is a prime.

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

It is a Duffinian number.

557523 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (557521) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3361 + ... + 3522.

2⁵⁵⁷⁵²³ is an apocalyptic number.

557523 is a deficient number, since it is larger than the sum of its proper divisors (275441).

557523 is an equidigital number, since it uses as much as digits as its factorization.

557523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6895 (or 6886 counting only the distinct ones).

The product of its digits is 5250, while the sum is 27.

The square root of 557523 is about 746.6746279337. The cubic root of 557523 is about 82.3039975184.

It can be divided in two parts, 55752 and 3, that added together give a palindrome (55755).

The spelling of 557523 in words is "five hundred fifty-seven thousand, five hundred twenty-three".