165310529 has 2 divisors, whose sum is σ = 165310530. Its totient is φ = 165310528.

The previous prime is 165310517. The next prime is 165310543. The reversal of 165310529 is 925013561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122434225 + 42876304 = 11065^2 + 6548^2 .

It is a cyclic number.

It is not a de Polignac number, because 165310529 - 2⁴ = 165310513 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 165310495 and 165310504.

It is not a weakly prime, because it can be changed into another prime (165310559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82655264 + 82655265.

It is an arithmetic number, because the mean of its divisors is an integer number (82655265).

Almost surely, 2^165310529 is an apocalyptic number.

It is an amenable number.

165310529 is a deficient number, since it is larger than the sum of its proper divisors (1).

165310529 is an equidigital number, since it uses as much as digits as its factorization.

165310529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 165310529 is about 12857.3142218739. The cubic root of 165310529 is about 548.8245187068.

The spelling of 165310529 in words is "one hundred sixty-five million, three hundred ten thousand, five hundred twenty-nine".