115422991 has 2 divisors, whose sum is σ = 115422992. Its totient is φ = 115422990.

The previous prime is 115422973. The next prime is 115422997. The reversal of 115422991 is 199224511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115422991 - 2⁷ = 115422863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115422997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57711495 + 57711496.

It is an arithmetic number, because the mean of its divisors is an integer number (57711496).

Almost surely, 2^115422991 is an apocalyptic number.

115422991 is a deficient number, since it is larger than the sum of its proper divisors (1).

115422991 is an equidigital number, since it uses as much as digits as its factorization.

115422991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 34.

The square root of 115422991 is about 10743.5092497750. The cubic root of 115422991 is about 486.8899101405.

The spelling of 115422991 in words is "one hundred fifteen million, four hundred twenty-two thousand, nine hundred ninety-one".