165224923 has 2 divisors, whose sum is σ = 165224924. Its totient is φ = 165224922.

The previous prime is 165224879. The next prime is 165224933. The reversal of 165224923 is 329422561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165224923 is a prime.

It is not a weakly prime, because it can be changed into another prime (165224933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82612461 + 82612462.

It is an arithmetic number, because the mean of its divisors is an integer number (82612462).

Almost surely, 2^165224923 is an apocalyptic number.

165224923 is a deficient number, since it is larger than the sum of its proper divisors (1).

165224923 is an equidigital number, since it uses as much as digits as its factorization.

165224923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 165224923 is about 12853.9847129207. The cubic root of 165224923 is about 548.7297661536.

The spelling of 165224923 in words is "one hundred sixty-five million, two hundred twenty-four thousand, nine hundred twenty-three".