115268981 has 2 divisors, whose sum is σ = 115268982. Its totient is φ = 115268980.

The previous prime is 115268969. The next prime is 115269001. The reversal of 115268981 is 189862511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78605956 + 36663025 = 8866^2 + 6055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115268981 is a prime.

It is a super-2 number, since 2×115268981² = 26573875961556722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115268941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57634490 + 57634491.

It is an arithmetic number, because the mean of its divisors is an integer number (57634491).

Almost surely, 2^115268981 is an apocalyptic number.

It is an amenable number.

115268981 is a deficient number, since it is larger than the sum of its proper divisors (1).

115268981 is an equidigital number, since it uses as much as digits as its factorization.

115268981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 41.

The square root of 115268981 is about 10736.3392737003. The cubic root of 115268981 is about 486.6732597989.

The spelling of 115268981 in words is "one hundred fifteen million, two hundred sixty-eight thousand, nine hundred eighty-one".