566263121 has 2 divisors, whose sum is σ = 566263122. Its totient is φ = 566263120.

The previous prime is 566263091. The next prime is 566263169. The reversal of 566263121 is 121362665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556252225 + 10010896 = 23585^2 + 3164^2 .

It is a cyclic number.

It is not a de Polignac number, because 566263121 - 2¹⁸ = 566000977 is a prime.

It is not a weakly prime, because it can be changed into another prime (566263171) 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, 283131560 + 283131561.

It is an arithmetic number, because the mean of its divisors is an integer number (283131561).

Almost surely, 2^566263121 is an apocalyptic number.

It is an amenable number.

566263121 is a deficient number, since it is larger than the sum of its proper divisors (1).

566263121 is an equidigital number, since it uses as much as digits as its factorization.

566263121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 566263121 is about 23796.2837644873. The cubic root of 566263121 is about 827.3185448677.

The spelling of 566263121 in words is "five hundred sixty-six million, two hundred sixty-three thousand, one hundred twenty-one".