2803 has 2 divisors, whose sum is σ = 2804.
Its totient is φ = 2802.
The previous prime is 2801. The next prime is 2819. The reversal of 2803 is 3082.
Adding to 2803 its reverse (3082), we get a palindrome (5885).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 2803 - 21 = 2801 is a prime.
Together with 2801, it forms a pair of twin primes.
It is a d-powerful number, because it can be written as 211 + 0 + 83 + 35 .
It is equal to p409 and since 2803 and 409 have the same sum of digits, it is a Honaker prime.
It is a plaindrome in base 7 and base 13.
It is not a weakly prime, because it can be changed into another prime (2801) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401 + 1402.
It is an arithmetic number, because the mean of its divisors is an integer number (1402).
2803 is a deficient number, since it is larger than the sum of its proper divisors (1).
2803 is an equidigital number, since it uses as much as digits as its factorization.
2803 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 48, while the sum is 13.
The square root of 2803 is about 52.9433659678.
The cubic root of 2803 is about 14.0996294522.
The spelling of 2803 in words is "two thousand, eight hundred three".