165662227 has 2 divisors, whose sum is σ = 165662228. Its totient is φ = 165662226.

The previous prime is 165662191. The next prime is 165662249. The reversal of 165662227 is 722266561.

It is a strong prime.

It is an emirp because it is prime and its reverse (722266561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165662227 - 2¹⁹ = 165137939 is a prime.

It is not a weakly prime, because it can be changed into another prime (165662267) 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, 82831113 + 82831114.

It is an arithmetic number, because the mean of its divisors is an integer number (82831114).

Almost surely, 2^165662227 is an apocalyptic number.

165662227 is a deficient number, since it is larger than the sum of its proper divisors (1).

165662227 is an equidigital number, since it uses as much as digits as its factorization.

165662227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 165662227 is about 12870.9839173235. The cubic root of 165662227 is about 549.2134509074.

The spelling of 165662227 in words is "one hundred sixty-five million, six hundred sixty-two thousand, two hundred twenty-seven".