801291 has 4 divisors (see below), whose sum is σ = 1068392. Its totient is φ = 534192.

The previous prime is 801289. The next prime is 801293. The reversal of 801291 is 192108.

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

It is an interprime number because it is at equal distance from previous prime (801289) and next prime (801293).

It is not a de Polignac number, because 801291 - 2¹ = 801289 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 801291.

It is not an unprimeable number, because it can be changed into a prime (801293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133546 + ... + 133551.

It is an arithmetic number, because the mean of its divisors is an integer number (267098).

2⁸⁰¹²⁹¹ is an apocalyptic number.

801291 is a deficient number, since it is larger than the sum of its proper divisors (267101).

801291 is a wasteful number, since it uses less digits than its factorization.

801291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267100.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 801291 is about 895.1485910172. The cubic root of 801291 is about 92.8816855949.

Adding to 801291 its reverse (192108), we get a palindrome (993399).

The spelling of 801291 in words is "eight hundred one thousand, two hundred ninety-one".