8352221 has 2 divisors, whose sum is σ = 8352222. Its totient is φ = 8352220.

The previous prime is 8352199. The next prime is 8352241. The reversal of 8352221 is 1222538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8352100 + 121 = 2890^2 + 11^2 .

It is a cyclic number.

It is not a de Polignac number, because 8352221 - 2¹⁴ = 8335837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8352241) 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, 4176110 + 4176111.

It is an arithmetic number, because the mean of its divisors is an integer number (4176111).

Almost surely, 2^8352221 is an apocalyptic number.

It is an amenable number.

8352221 is a deficient number, since it is larger than the sum of its proper divisors (1).

8352221 is an equidigital number, since it uses as much as digits as its factorization.

8352221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 8352221 is about 2890.0209341802. The cubic root of 8352221 is about 202.8931224144.

Adding to 8352221 its reverse (1222538), we get a palindrome (9574759).

The spelling of 8352221 in words is "eight million, three hundred fifty-two thousand, two hundred twenty-one".