822937261 has 2 divisors, whose sum is σ = 822937262. Its totient is φ = 822937260.

The previous prime is 822937243. The next prime is 822937277. The reversal of 822937261 is 162739228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 640849225 + 182088036 = 25315^2 + 13494^2 .

It is a cyclic number.

It is not a de Polignac number, because 822937261 - 2¹¹ = 822935213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (822937211) 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, 411468630 + 411468631.

It is an arithmetic number, because the mean of its divisors is an integer number (411468631).

Almost surely, 2^822937261 is an apocalyptic number.

It is an amenable number.

822937261 is a deficient number, since it is larger than the sum of its proper divisors (1).

822937261 is an equidigital number, since it uses as much as digits as its factorization.

822937261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 822937261 is about 28686.8830826913. The cubic root of 822937261 is about 937.1064108069.

The spelling of 822937261 in words is "eight hundred twenty-two million, nine hundred thirty-seven thousand, two hundred sixty-one".