560005561 has 2 divisors, whose sum is σ = 560005562. Its totient is φ = 560005560.

The previous prime is 560005553. The next prime is 560005591. The reversal of 560005561 is 165500065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 489781161 + 70224400 = 22131^2 + 8380^2 .

It is a cyclic number.

It is not a de Polignac number, because 560005561 - 2³ = 560005553 is a prime.

It is not a weakly prime, because it can be changed into another prime (560005591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280002780 + 280002781.

It is an arithmetic number, because the mean of its divisors is an integer number (280002781).

Almost surely, 2^560005561 is an apocalyptic number.

It is an amenable number.

560005561 is a deficient number, since it is larger than the sum of its proper divisors (1).

560005561 is an equidigital number, since it uses as much as digits as its factorization.

560005561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 560005561 is about 23664.4366296770. The cubic root of 560005561 is about 824.2597883417.

The spelling of 560005561 in words is "five hundred sixty million, five thousand, five hundred sixty-one".