2520003 has 8 divisors (see below), whose sum is σ = 3407616. Its totient is φ = 1656200.

The previous prime is 2519981. The next prime is 2520017. The reversal of 2520003 is 3000252.

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

It is a cyclic number.

It is not a de Polignac number, because 2520003 - 2⁶ = 2519939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2520073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5703 + ... + 6128.

It is an arithmetic number, because the mean of its divisors is an integer number (425952).

2^2520003 is an apocalyptic number.

2520003 is a deficient number, since it is larger than the sum of its proper divisors (887613).

2520003 is a wasteful number, since it uses less digits than its factorization.

2520003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11905.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 2520003 is about 1587.4517315497. The cubic root of 2520003 is about 136.0818963198.

Adding to 2520003 its reverse (3000252), we get a palindrome (5520255).

Subtracting 2520003 from its reverse (3000252), we obtain a square (480249 = 693²).

The spelling of 2520003 in words is "two million, five hundred twenty thousand, three".