422451481 has 2 divisors, whose sum is σ = 422451482. Its totient is φ = 422451480.

The previous prime is 422451467. The next prime is 422451487. The reversal of 422451481 is 184154224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221265625 + 201185856 = 14875^2 + 14184^2 .

It is a cyclic number.

It is not a de Polignac number, because 422451481 - 2¹³ = 422443289 is a prime.

It is a super-2 number, since 2×422451481² = 356930507598186722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (422451487) 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, 211225740 + 211225741.

It is an arithmetic number, because the mean of its divisors is an integer number (211225741).

Almost surely, 2^422451481 is an apocalyptic number.

It is an amenable number.

422451481 is a deficient number, since it is larger than the sum of its proper divisors (1).

422451481 is an equidigital number, since it uses as much as digits as its factorization.

422451481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10240, while the sum is 31.

The square root of 422451481 is about 20553.6245222102. The cubic root of 422451481 is about 750.3414628842.

The spelling of 422451481 in words is "four hundred twenty-two million, four hundred fifty-one thousand, four hundred eighty-one".