2544543 has 12 divisors (see below), whose sum is σ = 3891888. Its totient is φ = 1596480.

The previous prime is 2544539. The next prime is 2544571. The reversal of 2544543 is 3454452.

It is not a de Polignac number, because 2544543 - 2² = 2544539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544523) 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, 8163 + ... + 8468.

It is an arithmetic number, because the mean of its divisors is an integer number (324324).

2^2544543 is an apocalyptic number.

2544543 is a deficient number, since it is larger than the sum of its proper divisors (1347345).

2544543 is a wasteful number, since it uses less digits than its factorization.

2544543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16654 (or 16651 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 2544543 is about 1595.1623741801. The cubic root of 2544543 is about 136.5221958029.

Adding to 2544543 its reverse (3454452), we get a palindrome (5998995).

Subtracting 2544543 from its reverse (3454452), we obtain a palindrome (909909).

The spelling of 2544543 in words is "two million, five hundred forty-four thousand, five hundred forty-three".