2521305303 has 16 divisors (see below), whose sum is σ = 3713779200. Its totient is φ = 1508719680.

The previous prime is 2521305289. The next prime is 2521305313. The reversal of 2521305303 is 3035031252.

It is a happy number.

It is not a de Polignac number, because 2521305303 - 2⁶ = 2521305239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521305313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480958 + ... + 486171.

It is an arithmetic number, because the mean of its divisors is an integer number (232111200).

Almost surely, 2^2521305303 is an apocalyptic number.

2521305303 is a deficient number, since it is larger than the sum of its proper divisors (1192473897).

2521305303 is a wasteful number, since it uses less digits than its factorization.

2521305303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967222.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 2521305303 is about 50212.6010379865. The cubic root of 2521305303 is about 1361.0533403557.

Adding to 2521305303 its reverse (3035031252), we get a palindrome (5556336555).

The spelling of 2521305303 in words is "two billion, five hundred twenty-one million, three hundred five thousand, three hundred three".