215325217 has 2 divisors, whose sum is σ = 215325218. Its totient is φ = 215325216.

The previous prime is 215325211. The next prime is 215325223. The reversal of 215325217 is 712523512.

It is a balanced prime because it is at equal distance from previous prime (215325211) and next prime (215325223).

It can be written as a sum of positive squares in only one way, i.e., 198359056 + 16966161 = 14084^2 + 4119^2 .

It is a cyclic number.

It is not a de Polignac number, because 215325217 - 2¹⁵ = 215292449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (215325211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107662608 + 107662609.

It is an arithmetic number, because the mean of its divisors is an integer number (107662609).

Almost surely, 2^215325217 is an apocalyptic number.

It is an amenable number.

215325217 is a deficient number, since it is larger than the sum of its proper divisors (1).

215325217 is an equidigital number, since it uses as much as digits as its factorization.

215325217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 28.

The square root of 215325217 is about 14673.9639157250. The cubic root of 215325217 is about 599.3745491712.

Adding to 215325217 its reverse (712523512), we get a palindrome (927848729).

The spelling of 215325217 in words is "two hundred fifteen million, three hundred twenty-five thousand, two hundred seventeen".