804281 has 2 divisors, whose sum is σ = 804282. Its totient is φ = 804280.

The previous prime is 804259. The next prime is 804283. The reversal of 804281 is 182408.

804281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 570025 + 234256 = 755^2 + 484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804281 is a prime.

It is a super-2 number, since 2×804281² = 1293735853922, which contains 22 as substring.

Together with 804283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (804283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402140 + 402141.

It is an arithmetic number, because the mean of its divisors is an integer number (402141).

2⁸⁰⁴²⁸¹ is an apocalyptic number.

It is an amenable number.

804281 is a deficient number, since it is larger than the sum of its proper divisors (1).

804281 is an equidigital number, since it uses as much as digits as its factorization.

804281 is an evil number, because the sum of its binary digits is even.

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

The square root of 804281 is about 896.8171497022. The cubic root of 804281 is about 92.9970708601.

Adding to 804281 its reverse (182408), we get a palindrome (986689).

The spelling of 804281 in words is "eight hundred four thousand, two hundred eighty-one".