115378657 has 2 divisors, whose sum is σ = 115378658. Its totient is φ = 115378656.

The previous prime is 115378531. The next prime is 115378661. The reversal of 115378657 is 756873511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98724096 + 16654561 = 9936^2 + 4081^2 .

It is an emirp because it is prime and its reverse (756873511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115378657 is a prime.

It is a super-2 number, since 2×115378657² = 26624468982247298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (115370657) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57689328 + 57689329.

It is an arithmetic number, because the mean of its divisors is an integer number (57689329).

Almost surely, 2^115378657 is an apocalyptic number.

It is an amenable number.

115378657 is a deficient number, since it is larger than the sum of its proper divisors (1).

115378657 is an equidigital number, since it uses as much as digits as its factorization.

115378657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 43.

The square root of 115378657 is about 10741.4457593007. The cubic root of 115378657 is about 486.8275639783.

The spelling of 115378657 in words is "one hundred fifteen million, three hundred seventy-eight thousand, six hundred fifty-seven".