557591 has 2 divisors, whose sum is σ = 557592. Its totient is φ = 557590.

The previous prime is 557573. The next prime is 557611. The reversal of 557591 is 195755.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557591 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 557591.

It is not a weakly prime, because it can be changed into another prime (557521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278795 + 278796.

It is an arithmetic number, because the mean of its divisors is an integer number (278796).

2⁵⁵⁷⁵⁹¹ is an apocalyptic number.

557591 is a deficient number, since it is larger than the sum of its proper divisors (1).

557591 is an equidigital number, since it uses as much as digits as its factorization.

557591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7875, while the sum is 32.

The square root of 557591 is about 746.7201617741. The cubic root of 557591 is about 82.3073435354.

The spelling of 557591 in words is "five hundred fifty-seven thousand, five hundred ninety-one".