115391365 has 4 divisors (see below), whose sum is σ = 138469644. Its totient is φ = 92313088.

The previous prime is 115391357. The next prime is 115391369. The reversal of 115391365 is 563193511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53012961 + 62378404 = 7281^2 + 7898^2 .

It is a cyclic number.

It is not a de Polignac number, because 115391365 - 2³ = 115391357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115391365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115391369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11539132 + ... + 11539141.

It is an arithmetic number, because the mean of its divisors is an integer number (34617411).

Almost surely, 2^115391365 is an apocalyptic number.

It is an amenable number.

115391365 is a deficient number, since it is larger than the sum of its proper divisors (23078279).

115391365 is an equidigital number, since it uses as much as digits as its factorization.

115391365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23078278.

The product of its digits is 12150, while the sum is 34.

The square root of 115391365 is about 10742.0372834952. The cubic root of 115391365 is about 486.8454366586.

The spelling of 115391365 in words is "one hundred fifteen million, three hundred ninety-one thousand, three hundred sixty-five".