2805566497 has 2 divisors, whose sum is σ = 2805566498. Its totient is φ = 2805566496.

The previous prime is 2805566447. The next prime is 2805566503. The reversal of 2805566497 is 7946655082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1760725521 + 1044840976 = 41961^2 + 32324^2 .

It is a cyclic number.

It is not a de Polignac number, because 2805566497 - 2¹⁹ = 2805042209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2805566447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402783248 + 1402783249.

It is an arithmetic number, because the mean of its divisors is an integer number (1402783249).

Almost surely, 2^2805566497 is an apocalyptic number.

It is an amenable number.

2805566497 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805566497 is an equidigital number, since it uses as much as digits as its factorization.

2805566497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The square root of 2805566497 is about 52967.5985579864. The cubic root of 2805566497 is about 1410.3931464100.

The spelling of 2805566497 in words is "two billion, eight hundred five million, five hundred sixty-six thousand, four hundred ninety-seven".