164352217 has 2 divisors, whose sum is σ = 164352218. Its totient is φ = 164352216.

The previous prime is 164352179. The next prime is 164352233. The reversal of 164352217 is 712253461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97831881 + 66520336 = 9891^2 + 8156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164352217 is a prime.

It is not a weakly prime, because it can be changed into another prime (164352247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82176108 + 82176109.

It is an arithmetic number, because the mean of its divisors is an integer number (82176109).

Almost surely, 2^164352217 is an apocalyptic number.

It is an amenable number.

164352217 is a deficient number, since it is larger than the sum of its proper divisors (1).

164352217 is an equidigital number, since it uses as much as digits as its factorization.

164352217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 164352217 is about 12819.9928627125. The cubic root of 164352217 is about 547.7619432823.

The spelling of 164352217 in words is "one hundred sixty-four million, three hundred fifty-two thousand, two hundred seventeen".