115197281 has 2 divisors, whose sum is σ = 115197282. Its totient is φ = 115197280.

The previous prime is 115197259. The next prime is 115197307. The reversal of 115197281 is 182791511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114490000 + 707281 = 10700^2 + 841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115197281 is a prime.

It is a super-2 number, since 2×115197281² = 26540827099585922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115197211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57598640 + 57598641.

It is an arithmetic number, because the mean of its divisors is an integer number (57598641).

Almost surely, 2^115197281 is an apocalyptic number.

It is an amenable number.

115197281 is a deficient number, since it is larger than the sum of its proper divisors (1).

115197281 is an equidigital number, since it uses as much as digits as its factorization.

115197281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 35.

The square root of 115197281 is about 10732.9996273176. Note that the first 3 decimals coincide. The cubic root of 115197281 is about 486.5723314891.

The spelling of 115197281 in words is "one hundred fifteen million, one hundred ninety-seven thousand, two hundred eighty-one".