115161512 has 16 divisors (see below), whose sum is σ = 216512340. Its totient is φ = 57424896.

The previous prime is 115161493. The next prime is 115161521. The reversal of 115161512 is 215161511.

It can be written as a sum of positive squares in 2 ways, for example, as 113507716 + 1653796 = 10654^2 + 1286^2 .

It is a super-2 number, since 2×115161512² = 26524347692252288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16313 + ... + 22280.

Almost surely, 2^115161512 is an apocalyptic number.

It is an amenable number.

115161512 is a deficient number, since it is larger than the sum of its proper divisors (101350828).

115161512 is a wasteful number, since it uses less digits than its factorization.

115161512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38972 (or 38968 counting only the distinct ones).

The product of its digits is 300, while the sum is 23.

The square root of 115161512 is about 10731.3331883788. Note that the first 3 decimals coincide. The cubic root of 115161512 is about 486.5219656956.

Subtracting 115161512 from its reverse (215161511), we obtain a palindrome (99999999).

The spelling of 115161512 in words is "one hundred fifteen million, one hundred sixty-one thousand, five hundred twelve".