115131559 has 2 divisors, whose sum is σ = 115131560. Its totient is φ = 115131558.

The previous prime is 115131521. The next prime is 115131587. The reversal of 115131559 is 955131511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115131559 - 2⁹ = 115131047 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115131559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115131509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57565779 + 57565780.

It is an arithmetic number, because the mean of its divisors is an integer number (57565780).

Almost surely, 2^115131559 is an apocalyptic number.

115131559 is a deficient number, since it is larger than the sum of its proper divisors (1).

115131559 is an equidigital number, since it uses as much as digits as its factorization.

115131559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3375, while the sum is 31.

The square root of 115131559 is about 10729.9375114676. The cubic root of 115131559 is about 486.4797813008.

The spelling of 115131559 in words is "one hundred fifteen million, one hundred thirty-one thousand, five hundred fifty-nine".