115158609 has 12 divisors (see below), whose sum is σ = 167867700. Its totient is φ = 76067424.

The previous prime is 115158569. The next prime is 115158679. The reversal of 115158609 is 906851511.

It can be written as a sum of positive squares in 2 ways, for example, as 69555600 + 45603009 = 8340^2 + 6753^2 .

It is not a de Polignac number, because 115158609 - 2¹² = 115154513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115158679) 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, 57714 + ... + 59675.

It is an arithmetic number, because the mean of its divisors is an integer number (13988975).

Almost surely, 2^115158609 is an apocalyptic number.

It is an amenable number.

115158609 is a deficient number, since it is larger than the sum of its proper divisors (52709091).

115158609 is a wasteful number, since it uses less digits than its factorization.

115158609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117504 (or 117501 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 36.

The square root of 115158609 is about 10731.1979294019. The cubic root of 115158609 is about 486.5178775673.

The spelling of 115158609 in words is "one hundred fifteen million, one hundred fifty-eight thousand, six hundred nine".