165216059 has 2 divisors, whose sum is σ = 165216060. Its totient is φ = 165216058.

The previous prime is 165216053. The next prime is 165216067. The reversal of 165216059 is 950612561.

It is a weak prime.

It is an emirp because it is prime and its reverse (950612561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165216059 - 2⁴ = 165216043 is a prime.

It is not a weakly prime, because it can be changed into another prime (165216053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82608029 + 82608030.

It is an arithmetic number, because the mean of its divisors is an integer number (82608030).

Almost surely, 2^165216059 is an apocalyptic number.

165216059 is a deficient number, since it is larger than the sum of its proper divisors (1).

165216059 is an equidigital number, since it uses as much as digits as its factorization.

165216059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 165216059 is about 12853.6399124917. The cubic root of 165216059 is about 548.7199532118.

The spelling of 165216059 in words is "one hundred sixty-five million, two hundred sixteen thousand, fifty-nine".