557456657 has 4 divisors (see below), whose sum is σ = 560571120. Its totient is φ = 554342196.

The previous prime is 557456621. The next prime is 557456677. The reversal of 557456657 is 756654755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557456657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557456617) 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, 1556963 + ... + 1557320.

It is an arithmetic number, because the mean of its divisors is an integer number (140142780).

Almost surely, 2^557456657 is an apocalyptic number.

It is an amenable number.

557456657 is a deficient number, since it is larger than the sum of its proper divisors (3114463).

557456657 is a wasteful number, since it uses less digits than its factorization.

557456657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114462.

The product of its digits is 4410000, while the sum is 50.

The square root of 557456657 is about 23610.5200493339. The cubic root of 557456657 is about 823.0073277375.

The spelling of 557456657 in words is "five hundred fifty-seven million, four hundred fifty-six thousand, six hundred fifty-seven".