115272217 has 4 divisors (see below), whose sum is σ = 115309876. Its totient is φ = 115234560.

The previous prime is 115272193. The next prime is 115272233. The reversal of 115272217 is 712272511.

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 99780121 + 15492096 = 9989^2 + 3936^2 .

It is a cyclic number.

It is not a de Polignac number, because 115272217 - 2⁷ = 115272089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115272517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13788 + ... + 20509.

It is an arithmetic number, because the mean of its divisors is an integer number (28827469).

Almost surely, 2^115272217 is an apocalyptic number.

It is an amenable number.

115272217 is a deficient number, since it is larger than the sum of its proper divisors (37659).

115272217 is an equidigital number, since it uses as much as digits as its factorization.

115272217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37658.

The product of its digits is 1960, while the sum is 28.

The square root of 115272217 is about 10736.4899757789. The cubic root of 115272217 is about 486.6778139583.

The spelling of 115272217 in words is "one hundred fifteen million, two hundred seventy-two thousand, two hundred seventeen".