164573 has 4 divisors (see below), whose sum is σ = 165600. Its totient is φ = 163548.

The previous prime is 164569. The next prime is 164581. The reversal of 164573 is 375461.

164573 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 375461 = 307 ⋅1223.

It is a cyclic number.

It is not a de Polignac number, because 164573 - 2² = 164569 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164503) 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, 215 + ... + 612.

It is an arithmetic number, because the mean of its divisors is an integer number (41400).

2¹⁶⁴⁵⁷³ is an apocalyptic number.

It is an amenable number.

164573 is a deficient number, since it is larger than the sum of its proper divisors (1027).

164573 is an equidigital number, since it uses as much as digits as its factorization.

164573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its digits is 2520, while the sum is 26.

The square root of 164573 is about 405.6759790769. The cubic root of 164573 is about 54.8007112700.

It can be divided in two parts, 164 and 573, that added together give a palindrome (737).

The spelling of 164573 in words is "one hundred sixty-four thousand, five hundred seventy-three".