5443 has 2 divisors, whose sum is σ = 5444.
Its totient is φ = 5442.
The previous prime is 5441. The next prime is 5449. The reversal of 5443 is 3445.
Adding to 5443 its reverse (3445), we get a palindrome (8888).
It is a weak prime.
5443 is a truncatable prime.
It is a cyclic number.
It is not a de Polignac number, because 5443 - 21 = 5441 is a prime.
Together with 5441, it forms a pair of twin primes.
It is a nialpdrome in base 6 and base 10.
It is not a weakly prime, because it can be changed into another prime (5441) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2721 + 2722.
It is an arithmetic number, because the mean of its divisors is an integer number (2722).
25443 is an apocalyptic number.
5443 is a deficient number, since it is larger than the sum of its proper divisors (1).
5443 is an equidigital number, since it uses as much as digits as its factorization.
5443 is an evil number, because the sum of its binary digits is even.
The product of its digits is 240, while the sum is 16.
The square root of 5443 is about 73.7766900857.
The cubic root of 5443 is about 17.5905510575.
The spelling of 5443 in words is "five thousand, four hundred forty-three".