422513857 has 2 divisors, whose sum is σ = 422513858. Its totient is φ = 422513856.

The previous prime is 422513851. The next prime is 422513867. The reversal of 422513857 is 758315224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409293361 + 13220496 = 20231^2 + 3636^2 .

It is a cyclic number.

It is not a de Polignac number, because 422513857 - 2¹⁹ = 421989569 is a prime.

It is not a weakly prime, because it can be changed into another prime (422513851) 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, 211256928 + 211256929.

It is an arithmetic number, because the mean of its divisors is an integer number (211256929).

Almost surely, 2^422513857 is an apocalyptic number.

It is an amenable number.

422513857 is a deficient number, since it is larger than the sum of its proper divisors (1).

422513857 is an equidigital number, since it uses as much as digits as its factorization.

422513857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 37.

The square root of 422513857 is about 20555.1418628041. The cubic root of 422513857 is about 750.3783909875.

The spelling of 422513857 in words is "four hundred twenty-two million, five hundred thirteen thousand, eight hundred fifty-seven".