115815233 has 2 divisors, whose sum is σ = 115815234. Its totient is φ = 115815232.

The previous prime is 115815221. The next prime is 115815253. The reversal of 115815233 is 332518511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107474689 + 8340544 = 10367^2 + 2888^2 .

It is a cyclic number.

It is not a de Polignac number, because 115815233 - 2²⁶ = 48706369 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 115815196 and 115815205.

It is not a weakly prime, because it can be changed into another prime (115815253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57907616 + 57907617.

It is an arithmetic number, because the mean of its divisors is an integer number (57907617).

Almost surely, 2^115815233 is an apocalyptic number.

It is an amenable number.

115815233 is a deficient number, since it is larger than the sum of its proper divisors (1).

115815233 is an equidigital number, since it uses as much as digits as its factorization.

115815233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

The square root of 115815233 is about 10761.7486032708. The cubic root of 115815233 is about 487.4408192898.

The spelling of 115815233 in words is "one hundred fifteen million, eight hundred fifteen thousand, two hundred thirty-three".