5440522421 has 2 divisors, whose sum is σ = 5440522422. Its totient is φ = 5440522420.

The previous prime is 5440522379. The next prime is 5440522441. The reversal of 5440522421 is 1242250445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3501088900 + 1939433521 = 59170^2 + 44039^2 .

It is a cyclic number.

It is not a de Polignac number, because 5440522421 - 2⁶ = 5440522357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5440522441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2720261210 + 2720261211.

It is an arithmetic number, because the mean of its divisors is an integer number (2720261211).

Almost surely, 2^5440522421 is an apocalyptic number.

It is an amenable number.

5440522421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5440522421 is an equidigital number, since it uses as much as digits as its factorization.

5440522421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 5440522421 is about 73759.8971054055. The cubic root of 5440522421 is about 1758.7881659865.

Adding to 5440522421 its reverse (1242250445), we get a palindrome (6682772866).

The spelling of 5440522421 in words is "five billion, four hundred forty million, five hundred twenty-two thousand, four hundred twenty-one".