115497609 has 32 divisors (see below), whose sum is σ = 169456896. Its totient is φ = 69672960.

The previous prime is 115497593. The next prime is 115497623. The reversal of 115497609 is 906794511.

It is not a de Polignac number, because 115497609 - 2⁴ = 115497593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115497689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182724 + ... + 183354.

It is an arithmetic number, because the mean of its divisors is an integer number (5295528).

Almost surely, 2^115497609 is an apocalyptic number.

It is an amenable number.

115497609 is a deficient number, since it is larger than the sum of its proper divisors (53959287).

115497609 is a wasteful number, since it uses less digits than its factorization.

115497609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 115497609 is about 10746.9813901393. The cubic root of 115497609 is about 486.9948081475.

The spelling of 115497609 in words is "one hundred fifteen million, four hundred ninety-seven thousand, six hundred nine".