252558217 has 2 divisors, whose sum is σ = 252558218. Its totient is φ = 252558216.

The previous prime is 252558191. The next prime is 252558281. The reversal of 252558217 is 712855252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146385801 + 106172416 = 12099^2 + 10304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252558217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252558517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126279108 + 126279109.

It is an arithmetic number, because the mean of its divisors is an integer number (126279109).

Almost surely, 2^252558217 is an apocalyptic number.

It is an amenable number.

252558217 is a deficient number, since it is larger than the sum of its proper divisors (1).

252558217 is an equidigital number, since it uses as much as digits as its factorization.

252558217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56000, while the sum is 37.

The square root of 252558217 is about 15892.0803232302. The cubic root of 252558217 is about 632.1020046126.

The spelling of 252558217 in words is "two hundred fifty-two million, five hundred fifty-eight thousand, two hundred seventeen".