822476561 has 2 divisors, whose sum is σ = 822476562. Its totient is φ = 822476560.

The previous prime is 822476521. The next prime is 822476581. The reversal of 822476561 is 165674228.

822476561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 570302161 + 252174400 = 23881^2 + 15880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-822476561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (822476521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411238280 + 411238281.

It is an arithmetic number, because the mean of its divisors is an integer number (411238281).

Almost surely, 2^822476561 is an apocalyptic number.

It is an amenable number.

822476561 is a deficient number, since it is larger than the sum of its proper divisors (1).

822476561 is an equidigital number, since it uses as much as digits as its factorization.

822476561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The square root of 822476561 is about 28678.8521562492. The cubic root of 822476561 is about 936.9315066223.

The spelling of 822476561 in words is "eight hundred twenty-two million, four hundred seventy-six thousand, five hundred sixty-one".