115505559 has 12 divisors (see below), whose sum is σ = 179675496. Its totient is φ = 71080272.

The previous prime is 115505501. The next prime is 115505567. The reversal of 115505559 is 955505511.

It is a happy number.

115505559 is a `hidden beast` number, since 1 + 1 + 550 + 55 + 59 = 666.

It is not a de Polignac number, because 115505559 - 2¹⁹ = 114981271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115505059) 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, 493497 + ... + 493730.

It is an arithmetic number, because the mean of its divisors is an integer number (14972958).

Almost surely, 2^115505559 is an apocalyptic number.

115505559 is a deficient number, since it is larger than the sum of its proper divisors (64169937).

115505559 is a wasteful number, since it uses less digits than its factorization.

115505559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987246 (or 987243 counting only the distinct ones).

The product of its (nonzero) digits is 28125, while the sum is 36.

The square root of 115505559 is about 10747.3512550768. The cubic root of 115505559 is about 487.0059815964.

The spelling of 115505559 in words is "one hundred fifteen million, five hundred five thousand, five hundred fifty-nine".