5520220861 has 2 divisors, whose sum is σ = 5520220862. Its totient is φ = 5520220860.

The previous prime is 5520220813. The next prime is 5520220873. The reversal of 5520220861 is 1680220255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5476740025 + 43480836 = 74005^2 + 6594^2 .

It is a cyclic number.

It is not a de Polignac number, because 5520220861 - 2¹⁷ = 5520089789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5520220891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2760110430 + 2760110431.

It is an arithmetic number, because the mean of its divisors is an integer number (2760110431).

Almost surely, 2^5520220861 is an apocalyptic number.

It is an amenable number.

5520220861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5520220861 is an equidigital number, since it uses as much as digits as its factorization.

5520220861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 5520220861 is about 74298.1888137255. The cubic root of 5520220861 is about 1767.3347548255.

The spelling of 5520220861 in words is "five billion, five hundred twenty million, two hundred twenty thousand, eight hundred sixty-one".