165342977 has 2 divisors, whose sum is σ = 165342978. Its totient is φ = 165342976.

The previous prime is 165342953. The next prime is 165343019. The reversal of 165342977 is 779243561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153536881 + 11806096 = 12391^2 + 3436^2 .

It is a cyclic number.

It is not a de Polignac number, because 165342977 - 2²⁴ = 148565761 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165342917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82671488 + 82671489.

It is an arithmetic number, because the mean of its divisors is an integer number (82671489).

Almost surely, 2^165342977 is an apocalyptic number.

It is an amenable number.

165342977 is a deficient number, since it is larger than the sum of its proper divisors (1).

165342977 is an equidigital number, since it uses as much as digits as its factorization.

165342977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 44.

The square root of 165342977 is about 12858.5760098076. The cubic root of 165342977 is about 548.8604250564.

The spelling of 165342977 in words is "one hundred sixty-five million, three hundred forty-two thousand, nine hundred seventy-seven".