115233521 has 4 divisors (see below), whose sum is σ = 124097652. Its totient is φ = 106369392.

The previous prime is 115233491. The next prime is 115233523. The reversal of 115233521 is 125332511.

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 36663025 + 78570496 = 6055^2 + 8864^2 .

It is a cyclic number.

It is not a de Polignac number, because 115233521 - 2⁶ = 115233457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115233523) 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, 4432046 + ... + 4432071.

It is an arithmetic number, because the mean of its divisors is an integer number (31024413).

Almost surely, 2^115233521 is an apocalyptic number.

It is an amenable number.

115233521 is a deficient number, since it is larger than the sum of its proper divisors (8864131).

115233521 is an equidigital number, since it uses as much as digits as its factorization.

115233521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8864130.

The product of its digits is 900, while the sum is 23.

The square root of 115233521 is about 10734.6877458080. The cubic root of 115233521 is about 486.6233498591.

The spelling of 115233521 in words is "one hundred fifteen million, two hundred thirty-three thousand, five hundred twenty-one".