422881577 has 2 divisors, whose sum is σ = 422881578. Its totient is φ = 422881576.

The previous prime is 422881553. The next prime is 422881583. The reversal of 422881577 is 775188224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 422878096 + 3481 = 20564^2 + 59^2 .

It is a cyclic number.

It is not a de Polignac number, because 422881577 - 2⁸ = 422881321 is a prime.

It is equal to p_22489595 and since 422881577 and 22489595 have the same sum of digits, it is a Honaker prime.

It is a weakly prime.

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, 211440788 + 211440789.

It is an arithmetic number, because the mean of its divisors is an integer number (211440789).

Almost surely, 2^422881577 is an apocalyptic number.

It is an amenable number.

422881577 is a deficient number, since it is larger than the sum of its proper divisors (1).

422881577 is an equidigital number, since it uses as much as digits as its factorization.

422881577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250880, while the sum is 44.

The square root of 422881577 is about 20564.0846380285. The cubic root of 422881577 is about 750.5960163014.

The spelling of 422881577 in words is "four hundred twenty-two million, eight hundred eighty-one thousand, five hundred seventy-seven".