6565231 has 2 divisors, whose sum is σ = 6565232. Its totient is φ = 6565230.

The previous prime is 6565193. The next prime is 6565249. The reversal of 6565231 is 1325656.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6565231 is a prime.

It is a super-2 number, since 2×6565231² = 86204516166722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6565231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6565291) 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, 3282615 + 3282616.

It is an arithmetic number, because the mean of its divisors is an integer number (3282616).

Almost surely, 2^6565231 is an apocalyptic number.

6565231 is a deficient number, since it is larger than the sum of its proper divisors (1).

6565231 is an equidigital number, since it uses as much as digits as its factorization.

6565231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 28.

The square root of 6565231 is about 2562.2706726652. The cubic root of 6565231 is about 187.2477770126.

The spelling of 6565231 in words is "six million, five hundred sixty-five thousand, two hundred thirty-one".