2503 has 2 divisors, whose sum is σ = 2504. Its totient is φ = 2502.

The previous prime is 2477. The next prime is 2521. The reversal of 2503 is 3052.

Adding to 2503 its reverse (3052), we get a palindrome (5555).

It can be divided in two parts, 250 and 3, that added together give a triangular number (253 = T_{22}).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^{k}-2503 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number *n* which added to its sum of digits gives 2503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251 + 1252.

It is an arithmetic number, because the mean of its divisors is an integer number (1252).

2503 is a Friedman number, since it can be written as 50^2+3, using all its digits and the basic arithmetic operations.

2503 is a deficient number, since it is larger than the sum of its proper divisors (1).

2503 is an equidigital number, since it uses as much as digits as its factorization.

2503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 10.

The square root of 2503 is about 50.0299910054. The cubic root of 2503 is about 13.5775147481.

The spelling of 2503 in words is "two thousand, five hundred three".

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