115116257 has 4 divisors (see below), whose sum is σ = 117067440. Its totient is φ = 113165076.

The previous prime is 115116223. The next prime is 115116277. The reversal of 115116257 is 752611511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 752611511 = 197 ⋅3820363.

It is a cyclic number.

It is not a de Polignac number, because 115116257 - 2¹⁶ = 115050721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115116277) 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 in 3 ways as a sum of consecutive naturals, for example, 975503 + ... + 975620.

It is an arithmetic number, because the mean of its divisors is an integer number (29266860).

Almost surely, 2^115116257 is an apocalyptic number.

It is an amenable number.

115116257 is a deficient number, since it is larger than the sum of its proper divisors (1951183).

115116257 is an equidigital number, since it uses as much as digits as its factorization.

115116257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951182.

The product of its digits is 2100, while the sum is 29.

The square root of 115116257 is about 10729.2244360904. The cubic root of 115116257 is about 486.4582278609.

Adding to 115116257 its reverse (752611511), we get a palindrome (867727768).

The spelling of 115116257 in words is "one hundred fifteen million, one hundred sixteen thousand, two hundred fifty-seven".