115220545 has 16 divisors (see below), whose sum is σ = 151047360. Its totient is φ = 83678400.

The previous prime is 115220531. The next prime is 115220549. The reversal of 115220545 is 545022511.

It is not a de Polignac number, because 115220545 - 2⁵ = 115220513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115220549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63511 + ... + 65299.

It is an arithmetic number, because the mean of its divisors is an integer number (9440460).

Almost surely, 2^115220545 is an apocalyptic number.

It is an amenable number.

115220545 is a deficient number, since it is larger than the sum of its proper divisors (35826815).

115220545 is a wasteful number, since it uses less digits than its factorization.

115220545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 115220545 is about 10734.0833330099. The cubic root of 115220545 is about 486.6050835839.

The spelling of 115220545 in words is "one hundred fifteen million, two hundred twenty thousand, five hundred forty-five".