2560003 has 8 divisors (see below), whose sum is σ = 2736320. Its totient is φ = 2387880.

The previous prime is 2559989. The next prime is 2560021. The reversal of 2560003 is 3000652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2560003 - 2¹⁷ = 2428931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2560093) 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 in 7 ways as a sum of consecutive naturals, for example, 268 + ... + 2278.

It is an arithmetic number, because the mean of its divisors is an integer number (342040).

2^2560003 is an apocalyptic number.

2560003 is a deficient number, since it is larger than the sum of its proper divisors (176317).

2560003 is a wasteful number, since it uses less digits than its factorization.

2560003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097.

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

The square root of 2560003 is about 1600.0009374997. Note that the first 3 decimals coincide. The cubic root of 2560003 is about 136.7981291709.

Adding to 2560003 its reverse (3000652), we get a palindrome (5560655).

The spelling of 2560003 in words is "two million, five hundred sixty thousand, three".