164533 has 4 divisors (see below), whose sum is σ = 168588. Its totient is φ = 160480.

The previous prime is 164531. The next prime is 164569. The reversal of 164533 is 335461.

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 66564 + 97969 = 258^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 164533 - 2¹ = 164531 is a prime.

It is a super-2 number, since 2×164533² = 54142216178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164531) 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, 1966 + ... + 2047.

It is an arithmetic number, because the mean of its divisors is an integer number (42147).

2¹⁶⁴⁵³³ is an apocalyptic number.

It is an amenable number.

164533 is a deficient number, since it is larger than the sum of its proper divisors (4055).

164533 is an equidigital number, since it uses as much as digits as its factorization.

164533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054.

The product of its digits is 1080, while the sum is 22.

The square root of 164533 is about 405.6266756514. The cubic root of 164533 is about 54.7962710802.

Adding to 164533 its reverse (335461), we get a palindrome (499994).

It can be divided in two parts, 1645 and 33, that multiplied together give a triangular number (54285 = T₃₂₉).

The spelling of 164533 in words is "one hundred sixty-four thousand, five hundred thirty-three".