115285881 has 16 divisors (see below), whose sum is σ = 158146560. Its totient is φ = 74660880.

The previous prime is 115285879. The next prime is 115285889. The reversal of 115285881 is 188582511.

It is not a de Polignac number, because 115285881 - 2¹ = 115285879 is a prime.

It is a super-2 number, since 2×115285881² = 26581668715892322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115285889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22300 + ... + 26978.

It is an arithmetic number, because the mean of its divisors is an integer number (9884160).

Almost surely, 2^115285881 is an apocalyptic number.

It is an amenable number.

115285881 is a deficient number, since it is larger than the sum of its proper divisors (42860679).

115285881 is a wasteful number, since it uses less digits than its factorization.

115285881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916.

The product of its digits is 25600, while the sum is 39.

The square root of 115285881 is about 10737.1262915177. The cubic root of 115285881 is about 486.6970429425.

The spelling of 115285881 in words is "one hundred fifteen million, two hundred eighty-five thousand, eight hundred eighty-one".