165222443 has 2 divisors, whose sum is σ = 165222444. Its totient is φ = 165222442.

The previous prime is 165222419. The next prime is 165222451. The reversal of 165222443 is 344222561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165222443 - 2¹⁴ = 165206059 is a prime.

It is not a weakly prime, because it can be changed into another prime (165222413) 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, 82611221 + 82611222.

It is an arithmetic number, because the mean of its divisors is an integer number (82611222).

Almost surely, 2^165222443 is an apocalyptic number.

165222443 is a deficient number, since it is larger than the sum of its proper divisors (1).

165222443 is an equidigital number, since it uses as much as digits as its factorization.

165222443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 29.

The square root of 165222443 is about 12853.8882444185. Note that the first 3 decimals coincide. The cubic root of 165222443 is about 548.7270206908.

The spelling of 165222443 in words is "one hundred sixty-five million, two hundred twenty-two thousand, four hundred forty-three".