566421497 has 2 divisors, whose sum is σ = 566421498. Its totient is φ = 566421496.

The previous prime is 566421463. The next prime is 566421503. The reversal of 566421497 is 794124665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 539214841 + 27206656 = 23221^2 + 5216^2 .

It is a cyclic number.

It is not a de Polignac number, because 566421497 - 2¹⁶ = 566355961 is a prime.

It is not a weakly prime, because it can be changed into another prime (566421697) 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, 283210748 + 283210749.

It is an arithmetic number, because the mean of its divisors is an integer number (283210749).

Almost surely, 2^566421497 is an apocalyptic number.

It is an amenable number.

566421497 is a deficient number, since it is larger than the sum of its proper divisors (1).

566421497 is an equidigital number, since it uses as much as digits as its factorization.

566421497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 566421497 is about 23799.6112783381. The cubic root of 566421497 is about 827.3956675476.

The spelling of 566421497 in words is "five hundred sixty-six million, four hundred twenty-one thousand, four hundred ninety-seven".