5520243421 has 24 divisors (see below), whose sum is σ = 7094010240. Its totient is φ = 4247006400.

The previous prime is 5520243371. The next prime is 5520243433. The reversal of 5520243421 is 1243420255.

It is not a de Polignac number, because 5520243421 - 2⁹ = 5520242909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5520243421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5520243221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22240 + ... + 107401.

It is an arithmetic number, because the mean of its divisors is an integer number (295583760).

Almost surely, 2^5520243421 is an apocalyptic number.

It is an amenable number.

5520243421 is a deficient number, since it is larger than the sum of its proper divisors (1573766819).

5520243421 is a wasteful number, since it uses less digits than its factorization.

5520243421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129745 (or 129738 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 5520243421 is about 74298.3406342295. The cubic root of 5520243421 is about 1767.3371623993.

Adding to 5520243421 its reverse (1243420255), we get a palindrome (6763663676).

The spelling of 5520243421 in words is "five billion, five hundred twenty million, two hundred forty-three thousand, four hundred twenty-one".