165650033 has 2 divisors, whose sum is σ = 165650034. Its totient is φ = 165650032.

The previous prime is 165650027. The next prime is 165650099. The reversal of 165650033 is 330056561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158558464 + 7091569 = 12592^2 + 2663^2 .

It is a cyclic number.

It is not a de Polignac number, because 165650033 - 2²⁴ = 148872817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165649978 and 165650005.

It is not a weakly prime, because it can be changed into another prime (165650633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82825016 + 82825017.

It is an arithmetic number, because the mean of its divisors is an integer number (82825017).

Almost surely, 2^165650033 is an apocalyptic number.

It is an amenable number.

165650033 is a deficient number, since it is larger than the sum of its proper divisors (1).

165650033 is an equidigital number, since it uses as much as digits as its factorization.

165650033 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 29.

The square root of 165650033 is about 12870.5102074471. The cubic root of 165650033 is about 549.1999751476.

The spelling of 165650033 in words is "one hundred sixty-five million, six hundred fifty thousand, thirty-three".