2504646221 has 24 divisors (see below), whose sum is σ = 3195210240. Its totient is φ = 1941374400.

The previous prime is 2504646187. The next prime is 2504646239. The reversal of 2504646221 is 1226464052.

It is not a de Polignac number, because 2504646221 - 2¹⁰ = 2504645197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2504646721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90785 + ... + 115113.

It is an arithmetic number, because the mean of its divisors is an integer number (133133760).

Almost surely, 2^2504646221 is an apocalyptic number.

It is an amenable number.

2504646221 is a deficient number, since it is larger than the sum of its proper divisors (690564019).

2504646221 is a wasteful number, since it uses less digits than its factorization.

2504646221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24545 (or 24538 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 2504646221 is about 50046.4406426671. The cubic root of 2504646221 is about 1358.0490735800.

The spelling of 2504646221 in words is "two billion, five hundred four million, six hundred forty-six thousand, two hundred twenty-one".