3543 has 4 divisors (see below), whose sum is σ = 4728. Its totient is φ = 2360.

The previous prime is 3541. The next prime is 3547. The reversal of 3543 is 3453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3453 = 3 ⋅1151.

It is a cyclic number.

It is not a de Polignac number, because 3543 - 2¹ = 3541 is a prime.

It is a d-powerful number, because it can be written as 3⁴ + 4⁴ + 5⁵ + 3⁴ .

It is a D-number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3541) 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, 588 + ... + 593.

It is an arithmetic number, because the mean of its divisors is an integer number (1182).

3543 is a deficient number, since it is larger than the sum of its proper divisors (1185).

3543 is a wasteful number, since it uses less digits than its factorization.

3543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184.

The product of its digits is 180, while the sum is 15.

The square root of 3543 is about 59.5231047577. The cubic root of 3543 is about 15.2448697246.

Adding to 3543 its reverse (3453), we get a palindrome (6996).

It can be divided in two parts, 35 and 43, that added together give a triangular number (78 = T₁₂).

The spelling of 3543 in words is "three thousand, five hundred forty-three".