115051209 has 16 divisors (see below), whose sum is σ = 188802432. Its totient is φ = 60686208.

The previous prime is 115051177. The next prime is 115051219. The reversal of 115051209 is 902150511.

It is not a de Polignac number, because 115051209 - 2⁵ = 115051177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115051219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210444 + ... + 210989.

It is an arithmetic number, because the mean of its divisors is an integer number (11800152).

Almost surely, 2^115051209 is an apocalyptic number.

It is an amenable number.

115051209 is a deficient number, since it is larger than the sum of its proper divisors (73751223).

115051209 is a wasteful number, since it uses less digits than its factorization.

115051209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421456.

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 115051209 is about 10726.1926609585. The cubic root of 115051209 is about 486.3665839940.

The spelling of 115051209 in words is "one hundred fifteen million, fifty-one thousand, two hundred nine".