800281 has 2 divisors, whose sum is σ = 800282. Its totient is φ = 800280.

The previous prime is 800243. The next prime is 800287. The reversal of 800281 is 182008.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 793881 + 6400 = 891^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 800281 - 2¹⁵ = 767513 is a prime.

It is a super-2 number, since 2×800281² = 1280899357922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (800287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400140 + 400141.

It is an arithmetic number, because the mean of its divisors is an integer number (400141).

2⁸⁰⁰²⁸¹ is an apocalyptic number.

It is an amenable number.

800281 is a deficient number, since it is larger than the sum of its proper divisors (1).

800281 is an equidigital number, since it uses as much as digits as its factorization.

800281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 800281 is about 894.5842609838. The cubic root of 800281 is about 92.8426444538.

Adding to 800281 its reverse (182008), we get a palindrome (982289).

It can be divided in two parts, 800 and 281, that added together give a triangular number (1081 = T₄₆).

The spelling of 800281 in words is "eight hundred thousand, two hundred eighty-one".