545243 has 4 divisors (see below), whose sum is σ = 573960. Its totient is φ = 516528.

The previous prime is 545239. The next prime is 545257. The reversal of 545243 is 342545.

545243 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.

It is a cyclic number.

It is not a de Polignac number, because 545243 - 2² = 545239 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 14330 + ... + 14367.

It is an arithmetic number, because the mean of its divisors is an integer number (143490).

2⁵⁴⁵²⁴³ is an apocalyptic number.

545243 is a deficient number, since it is larger than the sum of its proper divisors (28717).

545243 is a wasteful number, since it uses less digits than its factorization.

545243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28716.

The product of its digits is 2400, while the sum is 23.

The square root of 545243 is about 738.4057150375. The cubic root of 545243 is about 81.6952299550.

Adding to 545243 its reverse (342545), we get a palindrome (887788).

The spelling of 545243 in words is "five hundred forty-five thousand, two hundred forty-three".