115885589 has 2 divisors, whose sum is σ = 115885590. Its totient is φ = 115885588.

The previous prime is 115885501. The next prime is 115885619. The reversal of 115885589 is 985588511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66422500 + 49463089 = 8150^2 + 7033^2 .

It is an emirp because it is prime and its reverse (985588511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115885589 - 2⁸ = 115885333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115885489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57942794 + 57942795.

It is an arithmetic number, because the mean of its divisors is an integer number (57942795).

Almost surely, 2^115885589 is an apocalyptic number.

It is an amenable number.

115885589 is a deficient number, since it is larger than the sum of its proper divisors (1).

115885589 is an equidigital number, since it uses as much as digits as its factorization.

115885589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576000, while the sum is 50.

The square root of 115885589 is about 10765.0169066286. The cubic root of 115885589 is about 487.5395036145.

The spelling of 115885589 in words is "one hundred fifteen million, eight hundred eighty-five thousand, five hundred eighty-nine".