115884581 has 2 divisors, whose sum is σ = 115884582. Its totient is φ = 115884580.

The previous prime is 115884533. The next prime is 115884583. The reversal of 115884581 is 185488511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89000356 + 26884225 = 9434^2 + 5185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115884581 is a prime.

It is a super-2 number, since 2×115884581² = 26858472227091122, which contains 22 as substring.

Together with 115884583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115884583) 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, 57942290 + 57942291.

It is an arithmetic number, because the mean of its divisors is an integer number (57942291).

Almost surely, 2^115884581 is an apocalyptic number.

It is an amenable number.

115884581 is a deficient number, since it is larger than the sum of its proper divisors (1).

115884581 is an equidigital number, since it uses as much as digits as its factorization.

115884581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51200, while the sum is 41.

The square root of 115884581 is about 10764.9700882074. The cubic root of 115884581 is about 487.5380900328.

The spelling of 115884581 in words is "one hundred fifteen million, eight hundred eighty-four thousand, five hundred eighty-one".