5520666061 has 2 divisors, whose sum is σ = 5520666062. Its totient is φ = 5520666060.

The previous prime is 5520666043. The next prime is 5520666079. The reversal of 5520666061 is 1606660255.

It is a balanced prime because it is at equal distance from previous prime (5520666043) and next prime (5520666079).

It can be written as a sum of positive squares in only one way, i.e., 4729312900 + 791353161 = 68770^2 + 28131^2 .

It is a cyclic number.

It is not a de Polignac number, because 5520666061 - 2¹¹ = 5520664013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5520666061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5520661061) 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, 2760333030 + 2760333031.

It is an arithmetic number, because the mean of its divisors is an integer number (2760333031).

Almost surely, 2^5520666061 is an apocalyptic number.

5520666061 is the 33229-th centered decagonal number.

It is an amenable number.

5520666061 is a deficient number, since it is larger than the sum of its proper divisors (1).

5520666061 is an equidigital number, since it uses as much as digits as its factorization.

5520666061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 5520666061 is about 74301.1847886694. The cubic root of 5520666061 is about 1767.3822647774.

It can be divided in two parts, 55 and 20666061, that added together give a square (20666116 = 4546²).

The spelling of 5520666061 in words is "five billion, five hundred twenty million, six hundred sixty-six thousand, sixty-one".