557823 has 16 divisors (see below), whose sum is σ = 861696. Its totient is φ = 314400.

The previous prime is 557803. The next prime is 557831. The reversal of 557823 is 328755.

It is a happy number.

It is not a de Polignac number, because 557823 - 2⁶ = 557759 is a prime.

It is a super-2 number, since 2×557823² = 622332998658, which contains 22 as substring.

557823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1990 + ... + 2252.

It is an arithmetic number, because the mean of its divisors is an integer number (53856).

2⁵⁵⁷⁸²³ is an apocalyptic number.

557823 is a deficient number, since it is larger than the sum of its proper divisors (303873).

557823 is a wasteful number, since it uses less digits than its factorization.

557823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374.

The product of its digits is 8400, while the sum is 30.

The square root of 557823 is about 746.8754916316. The cubic root of 557823 is about 82.3187573112.

The spelling of 557823 in words is "five hundred fifty-seven thousand, eight hundred twenty-three".