4569 has 4 divisors (see below), whose sum is σ = 6096. Its totient is φ = 3044.

The previous prime is 4567. The next prime is 4583. The reversal of 4569 is 9654.

4569 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

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.

It is a cyclic number.

It is not a de Polignac number, because 4569 - 2¹ = 4567 is a prime.

It is a super-2 number, since 2×4569² = 41751522, which contains 22 as substring.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

4569 is a lucky number.

It is a plaindrome in base 10 and base 12.

It is not an unprimeable number, because it can be changed into a prime (4561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759 + ... + 764.

It is an arithmetic number, because the mean of its divisors is an integer number (1524).

It is an amenable number.

4569 is a deficient number, since it is larger than the sum of its proper divisors (1527).

4569 is a wasteful number, since it uses less digits than its factorization.

4569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526.

The product of its digits is 1080, while the sum is 24.

The square root of 4569 is about 67.5943784645. The cubic root of 4569 is about 16.5935911778.

It can be divided in two parts, 456 and 9, that added together give a triangular number (465 = T₃₀).

The spelling of 4569 in words is "four thousand, five hundred sixty-nine".