422606161 has 2 divisors, whose sum is σ = 422606162. Its totient is φ = 422606160.

The previous prime is 422606159. The next prime is 422606293. The reversal of 422606161 is 161606224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239166225 + 183439936 = 15465^2 + 13544^2 .

It is a cyclic number.

It is not a de Polignac number, because 422606161 - 2¹ = 422606159 is a prime.

Together with 422606159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (422606461) 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, 211303080 + 211303081.

It is an arithmetic number, because the mean of its divisors is an integer number (211303081).

Almost surely, 2^422606161 is an apocalyptic number.

It is an amenable number.

422606161 is a deficient number, since it is larger than the sum of its proper divisors (1).

422606161 is an equidigital number, since it uses as much as digits as its factorization.

422606161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 422606161 is about 20557.3870178094. The cubic root of 422606161 is about 750.4330305239.

The spelling of 422606161 in words is "four hundred twenty-two million, six hundred six thousand, one hundred sixty-one".