165733 has 4 divisors (see below), whose sum is σ = 175500. Its totient is φ = 155968.

The previous prime is 165721. The next prime is 165749. The reversal of 165733 is 337561.

It is a happy number.

165733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74529 + 91204 = 273^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 165733 - 2⁵ = 165701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165698 and 165707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4858 + ... + 4891.

It is an arithmetic number, because the mean of its divisors is an integer number (43875).

2¹⁶⁵⁷³³ is an apocalyptic number.

It is an amenable number.

165733 is a deficient number, since it is larger than the sum of its proper divisors (9767).

165733 is an equidigital number, since it uses as much as digits as its factorization.

165733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9766.

The product of its digits is 1890, while the sum is 25.

The square root of 165733 is about 407.1031810242. The cubic root of 165733 is about 54.9291650085.

It can be divided in two parts, 165 and 733, that added together give a palindrome (898).

The spelling of 165733 in words is "one hundred sixty-five thousand, seven hundred thirty-three".