165122851 has 2 divisors, whose sum is σ = 165122852. Its totient is φ = 165122850.

The previous prime is 165122827. The next prime is 165122869. The reversal of 165122851 is 158221561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165122851 - 2²³ = 156734243 is a prime.

It is not a weakly prime, because it can be changed into another prime (165122801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82561425 + 82561426.

It is an arithmetic number, because the mean of its divisors is an integer number (82561426).

Almost surely, 2^165122851 is an apocalyptic number.

165122851 is a deficient number, since it is larger than the sum of its proper divisors (1).

165122851 is an equidigital number, since it uses as much as digits as its factorization.

165122851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 31.

The square root of 165122851 is about 12850.0136575803. The cubic root of 165122851 is about 548.6167455077.

The spelling of 165122851 in words is "one hundred sixty-five million, one hundred twenty-two thousand, eight hundred fifty-one".