115512161 has 8 divisors (see below), whose sum is σ = 122890464. Its totient is φ = 108198720.

The previous prime is 115512157. The next prime is 115512167. The reversal of 115512161 is 161215511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115512161 - 2² = 115512157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115512167) 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 7 ways as a sum of consecutive naturals, for example, 12515 + ... + 19688.

It is an arithmetic number, because the mean of its divisors is an integer number (15361308).

Almost surely, 2^115512161 is an apocalyptic number.

It is an amenable number.

115512161 is a deficient number, since it is larger than the sum of its proper divisors (7378303).

115512161 is a wasteful number, since it uses less digits than its factorization.

115512161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32431.

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

The square root of 115512161 is about 10747.6583961345. The cubic root of 115512161 is about 487.0152600885.

Adding to 115512161 its reverse (161215511), we get a palindrome (276727672).

The spelling of 115512161 in words is "one hundred fifteen million, five hundred twelve thousand, one hundred sixty-one".