165533 has 2 divisors, whose sum is σ = 165534. Its totient is φ = 165532.

The previous prime is 165527. The next prime is 165541. The reversal of 165533 is 335561.

165533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88804 + 76729 = 298^2 + 277^2 .

It is a cyclic number.

It is not a de Polignac number, because 165533 - 2⁶ = 165469 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 165499 and 165508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82766 + 82767.

It is an arithmetic number, because the mean of its divisors is an integer number (82767).

2¹⁶⁵⁵³³ is an apocalyptic number.

It is an amenable number.

165533 is a deficient number, since it is larger than the sum of its proper divisors (1).

165533 is an equidigital number, since it uses as much as digits as its factorization.

165533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 23.

The square root of 165533 is about 406.8574689004. The cubic root of 165533 is about 54.9070606699.

It can be divided in two parts, 1655 and 33, that multiplied together give a triangular number (54615 = T₃₃₀).

The spelling of 165533 in words is "one hundred sixty-five thousand, five hundred thirty-three".