115387121 has 2 divisors, whose sum is σ = 115387122. Its totient is φ = 115387120.

The previous prime is 115387099. The next prime is 115387229. The reversal of 115387121 is 121783511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108910096 + 6477025 = 10436^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 115387121 - 2²² = 111192817 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115386121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57693560 + 57693561.

It is an arithmetic number, because the mean of its divisors is an integer number (57693561).

Almost surely, 2^115387121 is an apocalyptic number.

It is an amenable number.

115387121 is a deficient number, since it is larger than the sum of its proper divisors (1).

115387121 is an equidigital number, since it uses as much as digits as its factorization.

115387121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 29.

The square root of 115387121 is about 10741.8397400073. The cubic root of 115387121 is about 486.8394679931.

The spelling of 115387121 in words is "one hundred fifteen million, three hundred eighty-seven thousand, one hundred twenty-one".