115518449 has 4 divisors (see below), whose sum is σ = 115554036. Its totient is φ = 115482864.

The previous prime is 115518437. The next prime is 115518457. The reversal of 115518449 is 944815511.

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 48163600 + 67354849 = 6940^2 + 8207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115518449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115518419) 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, 12374 + ... + 19599.

It is an arithmetic number, because the mean of its divisors is an integer number (28888509).

Almost surely, 2^115518449 is an apocalyptic number.

It is an amenable number.

115518449 is a deficient number, since it is larger than the sum of its proper divisors (35587).

115518449 is an equidigital number, since it uses as much as digits as its factorization.

115518449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35586.

The product of its digits is 28800, while the sum is 38.

The square root of 115518449 is about 10747.9509209895. The cubic root of 115518449 is about 487.0240969543.

The spelling of 115518449 in words is "one hundred fifteen million, five hundred eighteen thousand, four hundred forty-nine".