115107861 has 16 divisors (see below), whose sum is σ = 171325440. Its totient is φ = 68139120.

The previous prime is 115107859. The next prime is 115107877. The reversal of 115107861 is 168701511.

It is not a de Polignac number, because 115107861 - 2¹ = 115107859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115102861) 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 15 ways as a sum of consecutive naturals, for example, 39141 + ... + 41978.

It is an arithmetic number, because the mean of its divisors is an integer number (10707840).

Almost surely, 2^115107861 is an apocalyptic number.

115107861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115107861 is a deficient number, since it is larger than the sum of its proper divisors (56217579).

115107861 is a wasteful number, since it uses less digits than its factorization.

115107861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81176.

The product of its (nonzero) digits is 1680, while the sum is 30.

The square root of 115107861 is about 10728.8331611597. The cubic root of 115107861 is about 486.4464009690.

The spelling of 115107861 in words is "one hundred fifteen million, one hundred seven thousand, eight hundred sixty-one".