565147993 has 2 divisors, whose sum is σ = 565147994. Its totient is φ = 565147992.

The previous prime is 565147991. The next prime is 565148009. The reversal of 565147993 is 399741565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 461046784 + 104101209 = 21472^2 + 10203^2 .

It is a cyclic number.

It is not a de Polignac number, because 565147993 - 2¹ = 565147991 is a prime.

Together with 565147991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (565147991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282573996 + 282573997.

It is an arithmetic number, because the mean of its divisors is an integer number (282573997).

Almost surely, 2^565147993 is an apocalyptic number.

It is an amenable number.

565147993 is a deficient number, since it is larger than the sum of its proper divisors (1).

565147993 is an equidigital number, since it uses as much as digits as its factorization.

565147993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 49.

The square root of 565147993 is about 23772.8415003339. The cubic root of 565147993 is about 826.7751153212.

The spelling of 565147993 in words is "five hundred sixty-five million, one hundred forty-seven thousand, nine hundred ninety-three".