4163281 has 2 divisors, whose sum is σ = 4163282. Its totient is φ = 4163280.

The previous prime is 4163267. The next prime is 4163287. The reversal of 4163281 is 1823614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4161600 + 1681 = 2040^2 + 41^2 .

It is a cyclic number.

It is not a de Polignac number, because 4163281 - 2¹¹ = 4161233 is a prime.

It is a super-2 number, since 2×4163281² = 34665817369922, which contains 22 as substring.

4163281 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4163287) 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, 2081640 + 2081641.

It is an arithmetic number, because the mean of its divisors is an integer number (2081641).

Almost surely, 2^4163281 is an apocalyptic number.

4163281 is the 913-rd centered decagonal number.

It is an amenable number.

4163281 is a deficient number, since it is larger than the sum of its proper divisors (1).

4163281 is an equidigital number, since it uses as much as digits as its factorization.

4163281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 4163281 is about 2040.4119682064. The cubic root of 4163281 is about 160.8713012876.

Adding to 4163281 its reverse (1823614), we get a palindrome (5986895).

It can be divided in two parts, 4163 and 281, that added together give a palindrome (4444).

The spelling of 4163281 in words is "four million, one hundred sixty-three thousand, two hundred eighty-one".