115613 has 2 divisors, whose sum is σ = 115614. Its totient is φ = 115612.

The previous prime is 115603. The next prime is 115631. The reversal of 115613 is 316511.

Together with next prime (115631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114244 + 1369 = 338^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 115613 - 2⁴ = 115597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115591 and 115600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57806 + 57807.

It is an arithmetic number, because the mean of its divisors is an integer number (57807).

2¹¹⁵⁶¹³ is an apocalyptic number.

It is an amenable number.

115613 is a deficient number, since it is larger than the sum of its proper divisors (1).

115613 is an equidigital number, since it uses as much as digits as its factorization.

115613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90, while the sum is 17.

The square root of 115613 is about 340.0191171096. The cubic root of 115613 is about 48.7156935931.

The spelling of 115613 in words is "one hundred fifteen thousand, six hundred thirteen".