115556489 has 2 divisors, whose sum is σ = 115556490. Its totient is φ = 115556488.

The previous prime is 115556479. The next prime is 115556521. The reversal of 115556489 is 984655511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75550864 + 40005625 = 8692^2 + 6325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115556489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115556479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57778244 + 57778245.

It is an arithmetic number, because the mean of its divisors is an integer number (57778245).

Almost surely, 2^115556489 is an apocalyptic number.

It is an amenable number.

115556489 is a deficient number, since it is larger than the sum of its proper divisors (1).

115556489 is an equidigital number, since it uses as much as digits as its factorization.

115556489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 44.

The square root of 115556489 is about 10749.7204149689. The cubic root of 115556489 is about 487.0775497825.

The spelling of 115556489 in words is "one hundred fifteen million, five hundred fifty-six thousand, four hundred eighty-nine".