5565691 has 2 divisors, whose sum is σ = 5565692. Its totient is φ = 5565690.

The previous prime is 5565673. The next prime is 5565697. The reversal of 5565691 is 1965655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5565691 - 2¹¹ = 5563643 is a prime.

It is equal to p₃₈₄₉₇₆ and since 5565691 and 384976 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5565691.

It is not a weakly prime, because it can be changed into another prime (5565697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2782845 + 2782846.

It is an arithmetic number, because the mean of its divisors is an integer number (2782846).

Almost surely, 2^5565691 is an apocalyptic number.

5565691 is a deficient number, since it is larger than the sum of its proper divisors (1).

5565691 is an equidigital number, since it uses as much as digits as its factorization.

5565691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40500, while the sum is 37.

The square root of 5565691 is about 2359.1716766696. The cubic root of 5565691 is about 177.2174012673.

The spelling of 5565691 in words is "five million, five hundred sixty-five thousand, six hundred ninety-one".