115550217 has 6 divisors (see below), whose sum is σ = 166905882. Its totient is φ = 77033472.

The previous prime is 115550209. The next prime is 115550231. The reversal of 115550217 is 712055511.

115550217 is a `hidden beast` number, since 1 + 155 + 502 + 1 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 115541001 + 9216 = 10749^2 + 96^2 .

It is not a de Polignac number, because 115550217 - 2³ = 115550209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115550257) 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 5 ways as a sum of consecutive naturals, for example, 6419448 + ... + 6419465.

It is an arithmetic number, because the mean of its divisors is an integer number (27817647).

Almost surely, 2^115550217 is an apocalyptic number.

It is an amenable number.

115550217 is a deficient number, since it is larger than the sum of its proper divisors (51355665).

115550217 is a wasteful number, since it uses less digits than its factorization.

115550217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12838919 (or 12838916 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 115550217 is about 10749.4286824929. The cubic root of 115550217 is about 487.0687373374.

The spelling of 115550217 in words is "one hundred fifteen million, five hundred fifty thousand, two hundred seventeen".