4573 has 4 divisors (see below), whose sum is σ = 4860. Its totient is φ = 4288.

The previous prime is 4567. The next prime is 4583. The reversal of 4573 is 3754.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3754 = 2 ⋅1877.

It can be written as a sum of positive squares in 2 ways, for example, as 1764 + 2809 = 42^2 + 53^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4573 is a prime.

It is a d-powerful number, because it can be written as 4⁶ + 7³ + 5³ + 3² .

It is a Duffinian number.

4573 is a lucky number.

It is a plaindrome in base 11 and base 16.

It is a zygodrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 4573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4513) 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, 118 + ... + 151.

It is an arithmetic number, because the mean of its divisors is an integer number (1215).

2⁴⁵⁷³ is an apocalyptic number.

It is an amenable number.

4573 is a deficient number, since it is larger than the sum of its proper divisors (287).

4573 is a wasteful number, since it uses less digits than its factorization.

4573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

The product of its digits is 420, while the sum is 19.

The square root of 4573 is about 67.6239602508. The cubic root of 4573 is about 16.5984321353.

Subtracting from 4573 its sum of digits (19), we obtain a palindrome (4554).

The spelling of 4573 in words is "four thousand, five hundred seventy-three".