165628033 has 2 divisors, whose sum is σ = 165628034. Its totient is φ = 165628032.

The previous prime is 165628027. The next prime is 165628051. The reversal of 165628033 is 330826561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105534529 + 60093504 = 10273^2 + 7752^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165628033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165628033.

It is not a weakly prime, because it can be changed into another prime (165628013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82814016 + 82814017.

It is an arithmetic number, because the mean of its divisors is an integer number (82814017).

Almost surely, 2^165628033 is an apocalyptic number.

It is an amenable number.

165628033 is a deficient number, since it is larger than the sum of its proper divisors (1).

165628033 is an equidigital number, since it uses as much as digits as its factorization.

165628033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 165628033 is about 12869.6555120951. The cubic root of 165628033 is about 549.1756609671.

The spelling of 165628033 in words is "one hundred sixty-five million, six hundred twenty-eight thousand, thirty-three".