2521043803 has 4 divisors (see below), whose sum is σ = 2589180160. Its totient is φ = 2452907448.

The previous prime is 2521043801. The next prime is 2521043873. The reversal of 2521043803 is 3083401252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2521043803 - 2¹ = 2521043801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521043801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34068123 + ... + 34068196.

It is an arithmetic number, because the mean of its divisors is an integer number (647295040).

Almost surely, 2^2521043803 is an apocalyptic number.

2521043803 is a deficient number, since it is larger than the sum of its proper divisors (68136357).

2521043803 is an equidigital number, since it uses as much as digits as its factorization.

2521043803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68136356.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2521043803 is about 50209.9970424217. The cubic root of 2521043803 is about 1361.0062843389.

It can be divided in two parts, 25 and 21043803, that added together give a triangular number (21043828 = T₆₄₈₇).

The spelling of 2521043803 in words is "two billion, five hundred twenty-one million, forty-three thousand, eight hundred three".