2043543 has 16 divisors (see below), whose sum is σ = 2862720. Its totient is φ = 1294944.

The previous prime is 2043541. The next prime is 2043571. The reversal of 2043543 is 3453402.

It is a happy number.

It is not a de Polignac number, because 2043543 - 2¹ = 2043541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7080 + ... + 7362.

It is an arithmetic number, because the mean of its divisors is an integer number (178920).

2^2043543 is an apocalyptic number.

2043543 is a deficient number, since it is larger than the sum of its proper divisors (819177).

2043543 is a wasteful number, since it uses less digits than its factorization.

2043543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 2043543 is about 1429.5254457337. The cubic root of 2043543 is about 126.8998942472.

Adding to 2043543 its reverse (3453402), we get a palindrome (5496945).

The spelling of 2043543 in words is "two million, forty-three thousand, five hundred forty-three".