105565717 has 2 divisors, whose sum is σ = 105565718. Its totient is φ = 105565716.

The previous prime is 105565679. The next prime is 105565721. The reversal of 105565717 is 717565501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105144516 + 421201 = 10254^2 + 649^2 .

It is a cyclic number.

It is not a de Polignac number, because 105565717 - 2⁷ = 105565589 is a prime.

It is a super-2 number, since 2×105565717² = 22288241211448178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105565727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52782858 + 52782859.

It is an arithmetic number, because the mean of its divisors is an integer number (52782859).

Almost surely, 2^105565717 is an apocalyptic number.

It is an amenable number.

105565717 is a deficient number, since it is larger than the sum of its proper divisors (1).

105565717 is an equidigital number, since it uses as much as digits as its factorization.

105565717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36750, while the sum is 37.

The square root of 105565717 is about 10274.5178475683. The cubic root of 105565717 is about 472.6151443389.

The spelling of 105565717 in words is "one hundred five million, five hundred sixty-five thousand, seven hundred seventeen".