852436217 has 2 divisors, whose sum is σ = 852436218. Its totient is φ = 852436216.

The previous prime is 852436213. The next prime is 852436267. The reversal of 852436217 is 712634258.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 801399481 + 51036736 = 28309^2 + 7144^2 .

It is a cyclic number.

It is not a de Polignac number, because 852436217 - 2² = 852436213 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (852436213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426218108 + 426218109.

It is an arithmetic number, because the mean of its divisors is an integer number (426218109).

Almost surely, 2^852436217 is an apocalyptic number.

It is an amenable number.

852436217 is a deficient number, since it is larger than the sum of its proper divisors (1).

852436217 is an equidigital number, since it uses as much as digits as its factorization.

852436217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 38.

The square root of 852436217 is about 29196.5103565477. The cubic root of 852436217 is about 948.1723743269.

The spelling of 852436217 in words is "eight hundred fifty-two million, four hundred thirty-six thousand, two hundred seventeen".