115213249 has 4 divisors (see below), whose sum is σ = 115236436. Its totient is φ = 115190064.

The previous prime is 115213247. The next prime is 115213277. The reversal of 115213249 is 942312511.

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 90859024 + 24354225 = 9532^2 + 4935^2 .

It is a cyclic number.

It is not a de Polignac number, because 115213249 - 2¹ = 115213247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115213243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774 + ... + 15199.

It is an arithmetic number, because the mean of its divisors is an integer number (28809109).

Almost surely, 2^115213249 is an apocalyptic number.

It is an amenable number.

115213249 is a deficient number, since it is larger than the sum of its proper divisors (23187).

115213249 is an equidigital number, since it uses as much as digits as its factorization.

115213249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23186.

The product of its digits is 2160, while the sum is 28.

The square root of 115213249 is about 10733.7434756007. The cubic root of 115213249 is about 486.5948124249.

The spelling of 115213249 in words is "one hundred fifteen million, two hundred thirteen thousand, two hundred forty-nine".