2506003 has 2 divisors, whose sum is σ = 2506004. Its totient is φ = 2506002.

The previous prime is 2505991. The next prime is 2506013. The reversal of 2506003 is 3006052.

2506003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2506003 - 2¹³ = 2497811 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (2506013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253001 + 1253002.

It is an arithmetic number, because the mean of its divisors is an integer number (1253002).

2^2506003 is an apocalyptic number.

2506003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2506003 is an equidigital number, since it uses as much as digits as its factorization.

2506003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 2506003 is about 1583.0360071710. The cubic root of 2506003 is about 135.8294249903.

The spelling of 2506003 in words is "two million, five hundred six thousand, three".