2544024221 has 12 divisors (see below), whose sum is σ = 2602020372. Its totient is φ = 2487278976.

The previous prime is 2544024199. The next prime is 2544024229. The reversal of 2544024221 is 1224204452.

It can be written as a sum of positive squares in 6 ways, for example, as 4972900 + 2539051321 = 2230^2 + 50389^2 .

It is not a de Polignac number, because 2544024221 - 2¹⁰ = 2544023197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544024229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 889025 + ... + 891881.

It is an arithmetic number, because the mean of its divisors is an integer number (216835031).

Almost surely, 2^2544024221 is an apocalyptic number.

It is an amenable number.

2544024221 is a deficient number, since it is larger than the sum of its proper divisors (57996151).

2544024221 is an equidigital number, since it uses as much as digits as its factorization.

2544024221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280 (or 3227 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 2544024221 is about 50438.3209573832. The cubic root of 2544024221 is about 1365.1291716730.

Adding to 2544024221 its reverse (1224204452), we get a palindrome (3768228673).

The spelling of 2544024221 in words is "two billion, five hundred forty-four million, twenty-four thousand, two hundred twenty-one".