165054823 has 2 divisors, whose sum is σ = 165054824. Its totient is φ = 165054822.

The previous prime is 165054821. The next prime is 165054913. The reversal of 165054823 is 328450561.

It is a weak prime.

It is an emirp because it is prime and its reverse (328450561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165054823 - 2¹ = 165054821 is a prime.

It is a super-2 number, since 2×165054823² = 54486189191122658, which contains 22 as substring.

Together with 165054821, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165054821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82527411 + 82527412.

It is an arithmetic number, because the mean of its divisors is an integer number (82527412).

Almost surely, 2^165054823 is an apocalyptic number.

165054823 is a deficient number, since it is larger than the sum of its proper divisors (1).

165054823 is an equidigital number, since it uses as much as digits as its factorization.

165054823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 165054823 is about 12847.3663838158. The cubic root of 165054823 is about 548.5413946883.

The spelling of 165054823 in words is "one hundred sixty-five million, fifty-four thousand, eight hundred twenty-three".