56565606061 has 2 divisors, whose sum is σ = 56565606062. Its totient is φ = 56565606060.

The previous prime is 56565606049. The next prime is 56565606079. The reversal of 56565606061 is 16060656565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56272853961 + 292752100 = 237219^2 + 17110^2 .

It is a cyclic number.

It is not a de Polignac number, because 56565606061 - 2⁵ = 56565606029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56565606011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28282803030 + 28282803031.

It is an arithmetic number, because the mean of its divisors is an integer number (28282803031).

Almost surely, 2^56565606061 is an apocalyptic number.

It is an amenable number.

56565606061 is a deficient number, since it is larger than the sum of its proper divisors (1).

56565606061 is an equidigital number, since it uses as much as digits as its factorization.

56565606061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 56565606061 in words is "fifty-six billion, five hundred sixty-five million, six hundred six thousand, sixty-one".