282281 has 2 divisors, whose sum is σ = 282282. Its totient is φ = 282280.

The previous prime is 282253. The next prime is 282287. The reversal of 282281 is 182282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270400 + 11881 = 520^2 + 109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-282281 is a prime.

It is a super-2 number, since 2×282281² = 159365125922, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 282281.

It is not a weakly prime, because it can be changed into another prime (282287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141140 + 141141.

It is an arithmetic number, because the mean of its divisors is an integer number (141141).

2²⁸²²⁸¹ is an apocalyptic number.

It is an amenable number.

282281 is a deficient number, since it is larger than the sum of its proper divisors (1).

282281 is an equidigital number, since it uses as much as digits as its factorization.

282281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 512, while the sum is 23.

The square root of 282281 is about 531.3012328237. The cubic root of 282281 is about 65.5984960244.

Subtracting from 282281 its reverse (182282), we obtain a palindrome (99999).

The spelling of 282281 in words is "two hundred eighty-two thousand, two hundred eighty-one".