801881 has 4 divisors (see below), whose sum is σ = 803712. Its totient is φ = 800052.

The previous prime is 801859. The next prime is 801883. The reversal of 801881 is 188108.

801881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 801881 - 2⁶ = 801817 is a prime.

It is a super-2 number, since 2×801881² = 1286026276322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 801881.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 801881.

It is not an unprimeable number, because it can be changed into a prime (801883) 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, 176 + ... + 1278.

It is an arithmetic number, because the mean of its divisors is an integer number (200928).

2⁸⁰¹⁸⁸¹ is an apocalyptic number.

It is an amenable number.

801881 is a deficient number, since it is larger than the sum of its proper divisors (1831).

801881 is a wasteful number, since it uses less digits than its factorization.

801881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830.

The product of its (nonzero) digits is 512, while the sum is 26.

The square root of 801881 is about 895.4780846006. The cubic root of 801881 is about 92.9044766284.

Adding to 801881 its reverse (188108), we get a palindrome (989989).

The spelling of 801881 in words is "eight hundred one thousand, eight hundred eighty-one".