502281 has 28 divisors (see below), whose sum is σ = 826308. Its totient is φ = 303264.

The previous prime is 502277. The next prime is 502301. The reversal of 502281 is 182205.

It can be written as a sum of positive squares in 2 ways, for example, as 210681 + 291600 = 459^2 + 540^2 .

It is not a de Polignac number, because 502281 - 2² = 502277 is a prime.

It is a super-2 number, since 2×502281² = 504572405922, which contains 22 as substring.

502281 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 502281.

It is not an unprimeable number, because it can be changed into a prime (502261) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 9451 + ... + 9503.

It is an arithmetic number, because the mean of its divisors is an integer number (29511).

2⁵⁰²²⁸¹ is an apocalyptic number.

It is an amenable number.

502281 is a deficient number, since it is larger than the sum of its proper divisors (324027).

502281 is an equidigital number, since it uses as much as digits as its factorization.

502281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 502281 is about 708.7178564140. The cubic root of 502281 is about 79.4905649180.

Adding to 502281 its reverse (182205), we get a palindrome (684486).

The spelling of 502281 in words is "five hundred two thousand, two hundred eighty-one".