5440520221 has 2 divisors, whose sum is σ = 5440520222. Its totient is φ = 5440520220.

The previous prime is 5440520179. The next prime is 5440520231. The reversal of 5440520221 is 1220250445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4357452121 + 1083068100 = 66011^2 + 32910^2 .

It is a cyclic number.

It is not a de Polignac number, because 5440520221 - 2¹⁵ = 5440487453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5440520231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2720260110 + 2720260111.

It is an arithmetic number, because the mean of its divisors is an integer number (2720260111).

Almost surely, 2^5440520221 is an apocalyptic number.

It is an amenable number.

5440520221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5440520221 is an equidigital number, since it uses as much as digits as its factorization.

5440520221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 5440520221 is about 73759.8821921510. The cubic root of 5440520221 is about 1758.7879289177.

Adding to 5440520221 its reverse (1220250445), we get a palindrome (6660770666).

The spelling of 5440520221 in words is "five billion, four hundred forty million, five hundred twenty thousand, two hundred twenty-one".