115256689 has 2 divisors, whose sum is σ = 115256690. Its totient is φ = 115256688.

The previous prime is 115256663. The next prime is 115256693. The reversal of 115256689 is 986652511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107993664 + 7263025 = 10392^2 + 2695^2 .

It is a cyclic number.

It is not a de Polignac number, because 115256689 - 2²³ = 106868081 is a prime.

It is not a weakly prime, because it can be changed into another prime (115256629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57628344 + 57628345.

It is an arithmetic number, because the mean of its divisors is an integer number (57628345).

Almost surely, 2^115256689 is an apocalyptic number.

It is an amenable number.

115256689 is a deficient number, since it is larger than the sum of its proper divisors (1).

115256689 is an equidigital number, since it uses as much as digits as its factorization.

115256689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 43.

The square root of 115256689 is about 10735.7668100607. The cubic root of 115256689 is about 486.6559599717.

The spelling of 115256689 in words is "one hundred fifteen million, two hundred fifty-six thousand, six hundred eighty-nine".