115564243 has 2 divisors, whose sum is σ = 115564244. Its totient is φ = 115564242.

The previous prime is 115564231. The next prime is 115564271. The reversal of 115564243 is 342465511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115564243 is a prime.

It is not a weakly prime, because it can be changed into another prime (115564223) 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, 57782121 + 57782122.

It is an arithmetic number, because the mean of its divisors is an integer number (57782122).

Almost surely, 2^115564243 is an apocalyptic number.

115564243 is a deficient number, since it is larger than the sum of its proper divisors (1).

115564243 is an equidigital number, since it uses as much as digits as its factorization.

115564243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

The square root of 115564243 is about 10750.0810694618. The cubic root of 115564243 is about 487.0884440643.

The spelling of 115564243 in words is "one hundred fifteen million, five hundred sixty-four thousand, two hundred forty-three".