115806559 has 12 divisors (see below), whose sum is σ = 130736872. Its totient is φ = 102429360.

The previous prime is 115806553. The next prime is 115806571. The reversal of 115806559 is 955608511.

115806559 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 115806559 - 2²⁵ = 82252127 is a prime.

It is a super-2 number, since 2×115806559² = 26822318214840962, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115806553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8457 + ... + 17410.

Almost surely, 2^115806559 is an apocalyptic number.

115806559 is a deficient number, since it is larger than the sum of its proper divisors (14930313).

115806559 is a wasteful number, since it uses less digits than its factorization.

115806559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25926 (or 25915 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 40.

The square root of 115806559 is about 10761.3455943019. The cubic root of 115806559 is about 487.4286500005.

The spelling of 115806559 in words is "one hundred fifteen million, eight hundred six thousand, five hundred fifty-nine".