505560559549 has 2 divisors, whose sum is σ = 505560559550. Its totient is φ = 505560559548.

The previous prime is 505560559423. The next prime is 505560559573. The reversal of 505560559549 is 945955065505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323939690649 + 181620868900 = 569157^2 + 426170^2 .

It is a cyclic number.

It is not a de Polignac number, because 505560559549 - 2⁷ = 505560559421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505560559493 and 505560559502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505560559849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252780279774 + 252780279775.

It is an arithmetic number, because the mean of its divisors is an integer number (252780279775).

Almost surely, 2^505560559549 is an apocalyptic number.

It is an amenable number.

505560559549 is a deficient number, since it is larger than the sum of its proper divisors (1).

505560559549 is an equidigital number, since it uses as much as digits as its factorization.

505560559549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30375000, while the sum is 58.

The spelling of 505560559549 in words is "five hundred five billion, five hundred sixty million, five hundred fifty-nine thousand, five hundred forty-nine".