165022423 has 2 divisors, whose sum is σ = 165022424. Its totient is φ = 165022422.

The previous prime is 165022411. The next prime is 165022439. The reversal of 165022423 is 324220561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165022423 - 2²¹ = 162925271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165022223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82511211 + 82511212.

It is an arithmetic number, because the mean of its divisors is an integer number (82511212).

Almost surely, 2^165022423 is an apocalyptic number.

165022423 is a deficient number, since it is larger than the sum of its proper divisors (1).

165022423 is an equidigital number, since it uses as much as digits as its factorization.

165022423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 165022423 is about 12846.1053631052. The cubic root of 165022423 is about 548.5054997375.

Adding to 165022423 its reverse (324220561), we get a palindrome (489242984).

The spelling of 165022423 in words is "one hundred sixty-five million, twenty-two thousand, four hundred twenty-three".