557659 has 4 divisors (see below), whose sum is σ = 575680. Its totient is φ = 539640.

The previous prime is 557639. The next prime is 557663. The reversal of 557659 is 956755.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557659 is a prime.

It is a d-powerful number, because it can be written as 5⁵ + 5⁵ + 6² + 7⁵ + 5⁵ + 9⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8964 + ... + 9025.

It is an arithmetic number, because the mean of its divisors is an integer number (143920).

2⁵⁵⁷⁶⁵⁹ is an apocalyptic number.

557659 is a deficient number, since it is larger than the sum of its proper divisors (18021).

557659 is a wasteful number, since it uses less digits than its factorization.

557659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18020.

The product of its digits is 47250, while the sum is 37.

The square root of 557659 is about 746.7656928381. The cubic root of 557659 is about 82.3106892804.

The spelling of 557659 in words is "five hundred fifty-seven thousand, six hundred fifty-nine".