2543304421 has 4 divisors (see below), whose sum is σ = 2906633632. Its totient is φ = 2179975212.

The previous prime is 2543304391. The next prime is 2543304427. The reversal of 2543304421 is 1244033452.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2543304421 - 2¹³ = 2543296229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2543304421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543304427) 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, 181664595 + ... + 181664608.

It is an arithmetic number, because the mean of its divisors is an integer number (726658408).

Almost surely, 2^2543304421 is an apocalyptic number.

It is an amenable number.

2543304421 is a deficient number, since it is larger than the sum of its proper divisors (363329211).

2543304421 is an equidigital number, since it uses as much as digits as its factorization.

2543304421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363329210.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 2543304421 is about 50431.1850049154. The cubic root of 2543304421 is about 1365.0004107572. Note that the first 3 decimals are identical.

Adding to 2543304421 its reverse (1244033452), we get a palindrome (3787337873).

The spelling of 2543304421 in words is "two billion, five hundred forty-three million, three hundred four thousand, four hundred twenty-one".