557109 has 24 divisors (see below), whose sum is σ = 948480. Its totient is φ = 308448.

The previous prime is 557093. The next prime is 557153. The reversal of 557109 is 901755.

557109 is a `hidden beast` number, since 557 + 109 = 666.

It is not a de Polignac number, because 557109 - 2⁴ = 557093 is a prime.

557109 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2212 + ... + 2450.

It is an arithmetic number, because the mean of its divisors is an integer number (39520).

2⁵⁵⁷¹⁰⁹ is an apocalyptic number.

It is an amenable number.

557109 is a deficient number, since it is larger than the sum of its proper divisors (391371).

557109 is a wasteful number, since it uses less digits than its factorization.

557109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 27.

The square root of 557109 is about 746.3973472622. The cubic root of 557109 is about 82.2836203067.

It can be divided in two parts, 557 and 109, that added together give a palindrome (666).

The spelling of 557109 in words is "five hundred fifty-seven thousand, one hundred nine".