115015205 has 4 divisors (see below), whose sum is σ = 138018252. Its totient is φ = 92012160.

The previous prime is 115015171. The next prime is 115015207. The reversal of 115015205 is 502510511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 502510511 = 47 ⋅10691713.

It can be written as a sum of positive squares in 2 ways, for example, as 70845889 + 44169316 = 8417^2 + 6646^2 .

It is not a de Polignac number, because 115015205 - 2¹⁰ = 115014181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115015207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11501516 + ... + 11501525.

It is an arithmetic number, because the mean of its divisors is an integer number (34504563).

Almost surely, 2^115015205 is an apocalyptic number.

It is an amenable number.

115015205 is a deficient number, since it is larger than the sum of its proper divisors (23003047).

115015205 is an equidigital number, since it uses as much as digits as its factorization.

115015205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23003046.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 115015205 is about 10724.5142081122. The cubic root of 115015205 is about 486.3158443578.

Adding to 115015205 its reverse (502510511), we get a palindrome (617525716).

The spelling of 115015205 in words is "one hundred fifteen million, fifteen thousand, two hundred five".