115000091 has 2 divisors, whose sum is σ = 115000092. Its totient is φ = 115000090.

The previous prime is 115000079. The next prime is 115000099. The reversal of 115000091 is 190000511.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (190000511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115000091 - 2¹⁴ = 114983707 is a prime.

It is not a weakly prime, because it can be changed into another prime (115000099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57500045 + 57500046.

It is an arithmetic number, because the mean of its divisors is an integer number (57500046).

Almost surely, 2^115000091 is an apocalyptic number.

115000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

115000091 is an equidigital number, since it uses as much as digits as its factorization.

115000091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 115000091 is about 10723.8095376596. The cubic root of 115000091 is about 486.2945413784.

The spelling of 115000091 in words is "one hundred fifteen million, ninety-one", and thus it is an aban number.