115515377 has 2 divisors, whose sum is σ = 115515378. Its totient is φ = 115515376.

The previous prime is 115515343. The next prime is 115515431. The reversal of 115515377 is 773515511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69288976 + 46226401 = 8324^2 + 6799^2 .

It is a cyclic number.

It is not a de Polignac number, because 115515377 - 2²⁴ = 98738161 is a prime.

It is not a weakly prime, because it can be changed into another prime (115515077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57757688 + 57757689.

It is an arithmetic number, because the mean of its divisors is an integer number (57757689).

Almost surely, 2^115515377 is an apocalyptic number.

It is an amenable number.

115515377 is a deficient number, since it is larger than the sum of its proper divisors (1).

115515377 is an equidigital number, since it uses as much as digits as its factorization.

115515377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18375, while the sum is 35.

The square root of 115515377 is about 10747.8080090779. The cubic root of 115515377 is about 487.0197797469.

The spelling of 115515377 in words is "one hundred fifteen million, five hundred fifteen thousand, three hundred seventy-seven".