545223 has 12 divisors (see below), whose sum is σ = 845880. Its totient is φ = 311472.

The previous prime is 545213. The next prime is 545231. The reversal of 545223 is 322545.

It is not a de Polignac number, because 545223 - 2¹⁰ = 544199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a d-powerful number, because it can be written as 5⁴ + 4⁹ + 2 + 5⁴ + 2¹⁸ + 3⁹ .

It is a self number, because there is not a number n which added to its sum of digits gives 545223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1708 + ... + 2001.

It is an arithmetic number, because the mean of its divisors is an integer number (70490).

2⁵⁴⁵²²³ is an apocalyptic number.

545223 is a deficient number, since it is larger than the sum of its proper divisors (300657).

545223 is a wasteful number, since it uses less digits than its factorization.

545223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726 (or 3719 counting only the distinct ones).

The product of its digits is 1200, while the sum is 21.

The square root of 545223 is about 738.3921722229. The cubic root of 545223 is about 81.6942310581.

Adding to 545223 its reverse (322545), we get a palindrome (867768).

The spelling of 545223 in words is "five hundred forty-five thousand, two hundred twenty-three".