115205145 has 64 divisors (see below), whose sum is σ = 210567168. Its totient is φ = 53280000.

The previous prime is 115205143. The next prime is 115205159. The reversal of 115205145 is 541502511.

It is not a de Polignac number, because 115205145 - 2¹ = 115205143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115205143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 516504 + ... + 516726.

It is an arithmetic number, because the mean of its divisors is an integer number (3290112).

Almost surely, 2^115205145 is an apocalyptic number.

115205145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115205145 is a deficient number, since it is larger than the sum of its proper divisors (95362023).

115205145 is a wasteful number, since it uses less digits than its factorization.

115205145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 115205145 is about 10733.3659678593. The cubic root of 115205145 is about 486.5834032717.

Adding to 115205145 its reverse (541502511), we get a palindrome (656707656).

The spelling of 115205145 in words is "one hundred fifteen million, two hundred five thousand, one hundred forty-five".