115614781 has 2 divisors, whose sum is σ = 115614782. Its totient is φ = 115614780.

The previous prime is 115614761. The next prime is 115614817. The reversal of 115614781 is 187416511.

Together with next prime (115614817) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61371556 + 54243225 = 7834^2 + 7365^2 .

It is an emirp because it is prime and its reverse (187416511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115614781 - 2⁵ = 115614749 is a prime.

It is a super-2 number, since 2×115614781² = 26733555171355922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115614701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57807390 + 57807391.

It is an arithmetic number, because the mean of its divisors is an integer number (57807391).

Almost surely, 2^115614781 is an apocalyptic number.

It is an amenable number.

115614781 is a deficient number, since it is larger than the sum of its proper divisors (1).

115614781 is an equidigital number, since it uses as much as digits as its factorization.

115614781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 34.

The square root of 115614781 is about 10752.4313994557. The cubic root of 115614781 is about 487.1594374432.

The spelling of 115614781 in words is "one hundred fifteen million, six hundred fourteen thousand, seven hundred eighty-one".