422205541 has 2 divisors, whose sum is σ = 422205542. Its totient is φ = 422205540.

The previous prime is 422205491. The next prime is 422205551. The reversal of 422205541 is 145502224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371140225 + 51065316 = 19265^2 + 7146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422205541 is a prime.

It is a super-2 number, since 2×422205541² = 356515037702205362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422205551) 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, 211102770 + 211102771.

It is an arithmetic number, because the mean of its divisors is an integer number (211102771).

Almost surely, 2^422205541 is an apocalyptic number.

It is an amenable number.

422205541 is a deficient number, since it is larger than the sum of its proper divisors (1).

422205541 is an equidigital number, since it uses as much as digits as its factorization.

422205541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 422205541 is about 20547.6407648177. The cubic root of 422205541 is about 750.1958250138.

Adding to 422205541 its reverse (145502224), we get a palindrome (567707765).

The spelling of 422205541 in words is "four hundred twenty-two million, two hundred five thousand, five hundred forty-one".