115251491 has 2 divisors, whose sum is σ = 115251492. Its totient is φ = 115251490.

The previous prime is 115251431. The next prime is 115251497. The reversal of 115251491 is 194152511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115251491 - 2⁶ = 115251427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115251497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57625745 + 57625746.

It is an arithmetic number, because the mean of its divisors is an integer number (57625746).

Almost surely, 2^115251491 is an apocalyptic number.

115251491 is a deficient number, since it is larger than the sum of its proper divisors (1).

115251491 is an equidigital number, since it uses as much as digits as its factorization.

115251491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 29.

The square root of 115251491 is about 10735.5247193605. The cubic root of 115251491 is about 486.6486439084.

The spelling of 115251491 in words is "one hundred fifteen million, two hundred fifty-one thousand, four hundred ninety-one".