5559889561 has 2 divisors, whose sum is σ = 5559889562. Its totient is φ = 5559889560.

The previous prime is 5559889547. The next prime is 5559889579. The reversal of 5559889561 is 1659889555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4839289225 + 720600336 = 69565^2 + 26844^2 .

It is a cyclic number.

It is not a de Polignac number, because 5559889561 - 2¹⁵ = 5559856793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5559889561.

It is not a weakly prime, because it can be changed into another prime (5559809561) 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, 2779944780 + 2779944781.

It is an arithmetic number, because the mean of its divisors is an integer number (2779944781).

Almost surely, 2^5559889561 is an apocalyptic number.

It is an amenable number.

5559889561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5559889561 is an equidigital number, since it uses as much as digits as its factorization.

5559889561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440000, while the sum is 61.

The square root of 5559889561 is about 74564.6669743787. Note that the first 3 decimals coincide. The cubic root of 5559889561 is about 1771.5580523953.

The spelling of 5559889561 in words is "five billion, five hundred fifty-nine million, eight hundred eighty-nine thousand, five hundred sixty-one".