6520003303 has 16 divisors (see below), whose sum is σ = 7147629216. Its totient is φ = 5898259840.

The previous prime is 6520003289. The next prime is 6520003307. The reversal of 6520003303 is 3033000256.

It is a de Polignac number, because none of the positive numbers 2^k-6520003303 is a prime.

It is a super-2 number, since 2×6520003303² = 85020886142261819618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6520003307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3263901 + ... + 3265897.

It is an arithmetic number, because the mean of its divisors is an integer number (446726826).

Almost surely, 2^6520003303 is an apocalyptic number.

6520003303 is a deficient number, since it is larger than the sum of its proper divisors (627625913).

6520003303 is a wasteful number, since it uses less digits than its factorization.

6520003303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314.

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 6520003303 is about 80746.5374056374. The cubic root of 6520003303 is about 1868.1680423233.

Adding to 6520003303 its reverse (3033000256), we get a palindrome (9553003559).

The spelling of 6520003303 in words is "six billion, five hundred twenty million, three thousand, three hundred three".