282505 has 4 divisors (see below), whose sum is σ = 339012. Its totient is φ = 226000.

The previous prime is 282493. The next prime is 282559. The reversal of 282505 is 505282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505282 = 2 ⋅252641.

It can be written as a sum of positive squares in 2 ways, for example, as 71824 + 210681 = 268^2 + 459^2 .

It is not a de Polignac number, because 282505 - 2⁷ = 282377 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28246 + ... + 28255.

It is an arithmetic number, because the mean of its divisors is an integer number (84753).

2²⁸²⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

282505 is a deficient number, since it is larger than the sum of its proper divisors (56507).

282505 is an equidigital number, since it uses as much as digits as its factorization.

282505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56506.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 282505 is about 531.5119942203. The cubic root of 282505 is about 65.6158430156.

Adding to 282505 its reverse (505282), we get a palindrome (787787).

It can be divided in two parts, 282 and 505, that added together give a palindrome (787).

The spelling of 282505 in words is "two hundred eighty-two thousand, five hundred five".