2544454421 has 4 divisors (see below), whose sum is σ = 2547170892. Its totient is φ = 2541737952.

The previous prime is 2544454411. The next prime is 2544454439. The reversal of 2544454421 is 1244544452.

It is a happy number.

2544454421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 974313796 + 1570140625 = 31214^2 + 39625^2 .

It is a cyclic number.

It is not a de Polignac number, because 2544454421 - 2¹⁴ = 2544438037 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 (2544454411) 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, 1356830 + ... + 1358703.

It is an arithmetic number, because the mean of its divisors is an integer number (636792723).

Almost surely, 2^2544454421 is an apocalyptic number.

It is an amenable number.

2544454421 is a deficient number, since it is larger than the sum of its proper divisors (2716471).

2544454421 is an equidigital number, since it uses as much as digits as its factorization.

2544454421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716470.

The product of its digits is 102400, while the sum is 35.

The square root of 2544454421 is about 50442.5853917104. The cubic root of 2544454421 is about 1365.2061161015.

Adding to 2544454421 its reverse (1244544452), we get a palindrome (3788998873).

The spelling of 2544454421 in words is "two billion, five hundred forty-four million, four hundred fifty-four thousand, four hundred twenty-one".