801281 has 4 divisors (see below), whose sum is σ = 862932. Its totient is φ = 739632.

The previous prime is 801277. The next prime is 801289. The reversal of 801281 is 182108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128881 + 672400 = 359^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 801281 - 2² = 801277 is a prime.

It is a super-2 number, since 2×801281² = 1284102481922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (801289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30806 + ... + 30831.

It is an arithmetic number, because the mean of its divisors is an integer number (215733).

2⁸⁰¹²⁸¹ is an apocalyptic number.

It is an amenable number.

801281 is a deficient number, since it is larger than the sum of its proper divisors (61651).

801281 is a wasteful number, since it uses less digits than its factorization.

801281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61650.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 801281 is about 895.1430053349. The cubic root of 801281 is about 92.8812992098.

Adding to 801281 its reverse (182108), we get a palindrome (983389).

The spelling of 801281 in words is "eight hundred one thousand, two hundred eighty-one".