565919 has 2 divisors, whose sum is σ = 565920. Its totient is φ = 565918.

The previous prime is 565909. The next prime is 565921. The reversal of 565919 is 919565.

565919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-565919 is a prime.

It is a super-2 number, since 2×565919² = 640528629122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 565921, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 565919.

It is not a weakly prime, because it can be changed into another prime (565909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282959 + 282960.

It is an arithmetic number, because the mean of its divisors is an integer number (282960).

2⁵⁶⁵⁹¹⁹ is an apocalyptic number.

565919 is a deficient number, since it is larger than the sum of its proper divisors (1).

565919 is an equidigital number, since it uses as much as digits as its factorization.

565919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150, while the sum is 35.

The square root of 565919 is about 752.2758802461. The cubic root of 565919 is about 82.7150922335.

The spelling of 565919 in words is "five hundred sixty-five thousand, nine hundred nineteen".