115651717 has 2 divisors, whose sum is σ = 115651718. Its totient is φ = 115651716.

The previous prime is 115651709. The next prime is 115651729. The reversal of 115651717 is 717156511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60980481 + 54671236 = 7809^2 + 7394^2 .

It is a cyclic number.

It is not a de Polignac number, because 115651717 - 2³ = 115651709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115651117) 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 as a sum of consecutive naturals, namely, 57825858 + 57825859.

It is an arithmetic number, because the mean of its divisors is an integer number (57825859).

Almost surely, 2^115651717 is an apocalyptic number.

It is an amenable number.

115651717 is a deficient number, since it is larger than the sum of its proper divisors (1).

115651717 is an equidigital number, since it uses as much as digits as its factorization.

115651717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7350, while the sum is 34.

The square root of 115651717 is about 10754.1488273131. The cubic root of 115651717 is about 487.2113102948.

The spelling of 115651717 in words is "one hundred fifteen million, six hundred fifty-one thousand, seven hundred seventeen".