165224459 has 2 divisors, whose sum is σ = 165224460. Its totient is φ = 165224458.

The previous prime is 165224443. The next prime is 165224467. The reversal of 165224459 is 954422561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165224459 - 2⁴ = 165224443 is a prime.

It is not a weakly prime, because it can be changed into another prime (165224159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82612229 + 82612230.

It is an arithmetic number, because the mean of its divisors is an integer number (82612230).

Almost surely, 2^165224459 is an apocalyptic number.

165224459 is a deficient number, since it is larger than the sum of its proper divisors (1).

165224459 is an equidigital number, since it uses as much as digits as its factorization.

165224459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 38.

The square root of 165224459 is about 12853.9666640302. The cubic root of 165224459 is about 548.7292524884.

The spelling of 165224459 in words is "one hundred sixty-five million, two hundred twenty-four thousand, four hundred fifty-nine".