566481521 has 2 divisors, whose sum is σ = 566481522. Its totient is φ = 566481520.

The previous prime is 566481511. The next prime is 566481541. The reversal of 566481521 is 125184665.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 544989025 + 21492496 = 23345^2 + 4636^2 .

It is a cyclic number.

It is not a de Polignac number, because 566481521 - 2⁶ = 566481457 is a prime.

It is not a weakly prime, because it can be changed into another prime (566481511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283240760 + 283240761.

It is an arithmetic number, because the mean of its divisors is an integer number (283240761).

Almost surely, 2^566481521 is an apocalyptic number.

It is an amenable number.

566481521 is a deficient number, since it is larger than the sum of its proper divisors (1).

566481521 is an equidigital number, since it uses as much as digits as its factorization.

566481521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 38.

The square root of 566481521 is about 23800.8722739315. The cubic root of 566481521 is about 827.4248930411.

The spelling of 566481521 in words is "five hundred sixty-six million, four hundred eighty-one thousand, five hundred twenty-one".