115589 has 2 divisors, whose sum is σ = 115590. Its totient is φ = 115588.

The previous prime is 115571. The next prime is 115597. The reversal of 115589 is 985511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112225 + 3364 = 335^2 + 58^2 .

It is a cyclic number.

It is not a de Polignac number, because 115589 - 2¹² = 111493 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112589) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57794 + 57795.

It is an arithmetic number, because the mean of its divisors is an integer number (57795).

2¹¹⁵⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

115589 is a deficient number, since it is larger than the sum of its proper divisors (1).

115589 is an equidigital number, since it uses as much as digits as its factorization.

115589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 29.

The square root of 115589 is about 339.9838231446. The cubic root of 115589 is about 48.7123224106.

The spelling of 115589 in words is "one hundred fifteen thousand, five hundred eighty-nine".