565555555559 has 2 divisors, whose sum is σ = 565555555560. Its totient is φ = 565555555558.

The previous prime is 565555555531. The next prime is 565555555589. The reversal of 565555555559 is 955555555565.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 565555555559 - 2⁸ = 565555555303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 565555555495 and 565555555504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565555555589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282777777779 + 282777777780.

It is an arithmetic number, because the mean of its divisors is an integer number (282777777780).

Almost surely, 2^565555555559 is an apocalyptic number.

565555555559 is a deficient number, since it is larger than the sum of its proper divisors (1).

565555555559 is an equidigital number, since it uses as much as digits as its factorization.

565555555559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 527343750, while the sum is 65.

The spelling of 565555555559 in words is "five hundred sixty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-nine".