2443 has 4 divisors (see below), whose sum is σ = 2800. Its totient is φ = 2088.

The previous prime is 2441. The next prime is 2447. The reversal of 2443 is 3442.

2443 is nontrivially palindromic in base 6.

2443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3442 = 2 ⋅1721.

It is a cyclic number.

It is not a de Polignac number, because 2443 - 2^{1} = 2441 is a prime.

It is a d-powerful number, because it can be written as **2**^{7} + **4**^{3} + **4**^{3} + **3**^{7} .

2443 is an undulating number in base 6.

It is a plaindrome in base 13 and base 15.

It is not an unprimeable number, because it can be changed into a prime (2441) 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, 168 + ... + 181.

It is an arithmetic number, because the mean of its divisors is an integer number (700).

2^{2443} is an apocalyptic number.

2443 is a deficient number, since it is larger than the sum of its proper divisors (357).

2443 is an equidigital number, since it uses as much as digits as its factorization.

2443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its digits is 96, while the sum is 13.

The square root of 2443 is about 49.4267134250. The cubic root of 2443 is about 13.4681462065.

Adding to 2443 its reverse (3442), we get a palindrome (5885).

Subtracting 2443 from its reverse (3442), we obtain a palindrome (999).

The spelling of 2443 in words is "two thousand, four hundred forty-three", and thus it is an iban number.

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