115697579 has 2 divisors, whose sum is σ = 115697580. Its totient is φ = 115697578.

The previous prime is 115697573. The next prime is 115697581. The reversal of 115697579 is 975796511.

It is a strong prime.

It is an emirp because it is prime and its reverse (975796511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115697579 is a prime.

It is a super-2 number, since 2×115697579² = 26771859572922482, which contains 22 as substring.

Together with 115697581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115697573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57848789 + 57848790.

It is an arithmetic number, because the mean of its divisors is an integer number (57848790).

Almost surely, 2^115697579 is an apocalyptic number.

115697579 is a deficient number, since it is larger than the sum of its proper divisors (1).

115697579 is an equidigital number, since it uses as much as digits as its factorization.

115697579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 595350, while the sum is 50.

The square root of 115697579 is about 10756.2809093106. The cubic root of 115697579 is about 487.2757034364.

The spelling of 115697579 in words is "one hundred fifteen million, six hundred ninety-seven thousand, five hundred seventy-nine".