557123 has 4 divisors (see below), whose sum is σ = 636720. Its totient is φ = 477528.

The previous prime is 557093. The next prime is 557153. The reversal of 557123 is 321755.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (557093) and next prime (557153).

It is a cyclic number.

It is not a de Polignac number, because 557123 - 2⁶ = 557059 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (557153) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 39788 + ... + 39801.

It is an arithmetic number, because the mean of its divisors is an integer number (159180).

2⁵⁵⁷¹²³ is an apocalyptic number.

557123 is a deficient number, since it is larger than the sum of its proper divisors (79597).

557123 is an equidigital number, since it uses as much as digits as its factorization.

557123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79596.

The product of its digits is 1050, while the sum is 23.

The square root of 557123 is about 746.4067255860. The cubic root of 557123 is about 82.2843095561.

Adding to 557123 its reverse (321755), we get a palindrome (878878).

The spelling of 557123 in words is "five hundred fifty-seven thousand, one hundred twenty-three".