543443 has 4 divisors (see below), whose sum is σ = 545160. Its totient is φ = 541728.

The previous prime is 543427. The next prime is 543463. The reversal of 543443 is 344345.

It is a happy number.

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 543443 - 2⁴ = 543427 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 543443.

It is not an unprimeable number, because it can be changed into a prime (543463) 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, 230 + ... + 1067.

It is an arithmetic number, because the mean of its divisors is an integer number (136290).

2⁵⁴³⁴⁴³ is an apocalyptic number.

543443 is a deficient number, since it is larger than the sum of its proper divisors (1717).

543443 is a wasteful number, since it uses less digits than its factorization.

543443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716.

The product of its digits is 2880, while the sum is 23.

The square root of 543443 is about 737.1858653013. The cubic root of 543443 is about 81.6052312262.

Adding to 543443 its reverse (344345), we get a palindrome (887788).

The spelling of 543443 in words is "five hundred forty-three thousand, four hundred forty-three".