557564609 has 4 divisors (see below), whose sum is σ = 637216704. Its totient is φ = 477912516.

The previous prime is 557564587. The next prime is 557564629. The reversal of 557564609 is 906465755.

It is a happy number.

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-557564609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557564629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39826037 + ... + 39826050.

It is an arithmetic number, because the mean of its divisors is an integer number (159304176).

Almost surely, 2^557564609 is an apocalyptic number.

It is an amenable number.

557564609 is a deficient number, since it is larger than the sum of its proper divisors (79652095).

557564609 is an equidigital number, since it uses as much as digits as its factorization.

557564609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79652094.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The square root of 557564609 is about 23612.8060382497. The cubic root of 557564609 is about 823.0604496868.

The spelling of 557564609 in words is "five hundred fifty-seven million, five hundred sixty-four thousand, six hundred nine".