165563327 has 2 divisors, whose sum is σ = 165563328. Its totient is φ = 165563326.

The previous prime is 165563303. The next prime is 165563329. The reversal of 165563327 is 723365561.

It is a strong prime.

It is an emirp because it is prime and its reverse (723365561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165563327 - 2⁸ = 165563071 is a prime.

It is a super-2 number, since 2×165563327² = 54822430494617858, which contains 22 as substring.

Together with 165563329, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165563329) 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, 82781663 + 82781664.

It is an arithmetic number, because the mean of its divisors is an integer number (82781664).

Almost surely, 2^165563327 is an apocalyptic number.

165563327 is a deficient number, since it is larger than the sum of its proper divisors (1).

165563327 is an equidigital number, since it uses as much as digits as its factorization.

165563327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 38.

The square root of 165563327 is about 12867.1413686180. The cubic root of 165563327 is about 549.1041360605.

The spelling of 165563327 in words is "one hundred sixty-five million, five hundred sixty-three thousand, three hundred twenty-seven".