2543443 has 6 divisors (see below), whose sum is σ = 2958756. Its totient is φ = 2180052.

The previous prime is 2543441. The next prime is 2543459. The reversal of 2543443 is 3443452.

It is not a de Polignac number, because 2543443 - 2¹ = 2543441 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 5⁹ + 4 + 3⁵ + 4 + 4⁸ + 3⁵ .

It is a Duffinian number.

2543443 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2543441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25905 + ... + 26002.

It is an arithmetic number, because the mean of its divisors is an integer number (493126).

2^2543443 is an apocalyptic number.

2543443 is a deficient number, since it is larger than the sum of its proper divisors (415313).

2543443 is an equidigital number, since it uses as much as digits as its factorization.

2543443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51921 (or 51914 counting only the distinct ones).

The product of its digits is 5760, while the sum is 25.

The square root of 2543443 is about 1594.8175444232. The cubic root of 2543443 is about 136.5025202252.

Adding to 2543443 its reverse (3443452), we get a palindrome (5986895).

Subtracting 2543443 from its reverse (3443452), we obtain a palindrome (900009).

The spelling of 2543443 in words is "two million, five hundred forty-three thousand, four hundred forty-three".