566556149 has 2 divisors, whose sum is σ = 566556150. Its totient is φ = 566556148.

The previous prime is 566556131. The next prime is 566556169. The reversal of 566556149 is 941655665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511573924 + 54982225 = 22618^2 + 7415^2 .

It is a cyclic number.

It is not a de Polignac number, because 566556149 - 2⁸ = 566555893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566556169) 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, 283278074 + 283278075.

It is an arithmetic number, because the mean of its divisors is an integer number (283278075).

Almost surely, 2^566556149 is an apocalyptic number.

It is an amenable number.

566556149 is a deficient number, since it is larger than the sum of its proper divisors (1).

566556149 is an equidigital number, since it uses as much as digits as its factorization.

566556149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972000, while the sum is 47.

The square root of 566556149 is about 23802.4399799684. The cubic root of 566556149 is about 827.4612262966.

The spelling of 566556149 in words is "five hundred sixty-six million, five hundred fifty-six thousand, one hundred forty-nine".