565721141 has 2 divisors, whose sum is σ = 565721142. Its totient is φ = 565721140.

The previous prime is 565721131. The next prime is 565721171. The reversal of 565721141 is 141127565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 472192900 + 93528241 = 21730^2 + 9671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-565721141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 565721098 and 565721107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565721131) 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, 282860570 + 282860571.

It is an arithmetic number, because the mean of its divisors is an integer number (282860571).

Almost surely, 2^565721141 is an apocalyptic number.

It is an amenable number.

565721141 is a deficient number, since it is larger than the sum of its proper divisors (1).

565721141 is an equidigital number, since it uses as much as digits as its factorization.

565721141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 32.

The square root of 565721141 is about 23784.8931256796. The cubic root of 565721141 is about 827.0545137614.

The spelling of 565721141 in words is "five hundred sixty-five million, seven hundred twenty-one thousand, one hundred forty-one".