165164977 has 2 divisors, whose sum is σ = 165164978. Its totient is φ = 165164976.

The previous prime is 165164971. The next prime is 165164999. The reversal of 165164977 is 779461561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156350016 + 8814961 = 12504^2 + 2969^2 .

It is an emirp because it is prime and its reverse (779461561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165164977 is a prime.

It is not a weakly prime, because it can be changed into another prime (165164971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82582488 + 82582489.

It is an arithmetic number, because the mean of its divisors is an integer number (82582489).

Almost surely, 2^165164977 is an apocalyptic number.

It is an amenable number.

165164977 is a deficient number, since it is larger than the sum of its proper divisors (1).

165164977 is an equidigital number, since it uses as much as digits as its factorization.

165164977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 46.

The square root of 165164977 is about 12851.6526952762. The cubic root of 165164977 is about 548.6633957519.

The spelling of 165164977 in words is "one hundred sixty-five million, one hundred sixty-four thousand, nine hundred seventy-seven".