115604591 has 2 divisors, whose sum is σ = 115604592. Its totient is φ = 115604590.

The previous prime is 115604561. The next prime is 115604603. The reversal of 115604591 is 195406511.

It is a strong prime.

It is an emirp because it is prime and its reverse (195406511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115604591 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115604521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57802295 + 57802296.

It is an arithmetic number, because the mean of its divisors is an integer number (57802296).

Almost surely, 2^115604591 is an apocalyptic number.

115604591 is a deficient number, since it is larger than the sum of its proper divisors (1).

115604591 is an equidigital number, since it uses as much as digits as its factorization.

115604591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 115604591 is about 10751.9575426989. The cubic root of 115604591 is about 487.1451246812.

The spelling of 115604591 in words is "one hundred fifteen million, six hundred four thousand, five hundred ninety-one".