566540591 has 2 divisors, whose sum is σ = 566540592. Its totient is φ = 566540590.

The previous prime is 566540519. The next prime is 566540599. The reversal of 566540591 is 195045665.

566540591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (566540519) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 566540591 - 2¹⁴ = 566524207 is a prime.

It is equal to p_29666750 and since 566540591 and 29666750 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566540599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283270295 + 283270296.

It is an arithmetic number, because the mean of its divisors is an integer number (283270296).

Almost surely, 2^566540591 is an apocalyptic number.

566540591 is a deficient number, since it is larger than the sum of its proper divisors (1).

566540591 is an equidigital number, since it uses as much as digits as its factorization.

566540591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 566540591 is about 23802.1131624904. The cubic root of 566540591 is about 827.4536520197.

The spelling of 566540591 in words is "five hundred sixty-six million, five hundred forty thousand, five hundred ninety-one".