565642801 has 2 divisors, whose sum is σ = 565642802. Its totient is φ = 565642800.

The previous prime is 565642799. The next prime is 565642811. The reversal of 565642801 is 108246565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347785201 + 217857600 = 18649^2 + 14760^2 .

It is a cyclic number.

It is not a de Polignac number, because 565642801 - 2¹ = 565642799 is a prime.

Together with 565642799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (565642811) 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, 282821400 + 282821401.

It is an arithmetic number, because the mean of its divisors is an integer number (282821401).

Almost surely, 2^565642801 is an apocalyptic number.

It is an amenable number.

565642801 is a deficient number, since it is larger than the sum of its proper divisors (1).

565642801 is an equidigital number, since it uses as much as digits as its factorization.

565642801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 565642801 is about 23783.2462250215. The cubic root of 565642801 is about 827.0163356810.

The spelling of 565642801 in words is "five hundred sixty-five million, six hundred forty-two thousand, eight hundred one".