1081871 has 6 divisors (see below), whose sum is σ = 1258560. Its totient is φ = 927276.

The previous prime is 1081859. The next prime is 1081891. The reversal of 1081871 is 1781801.

It is not a de Polignac number, because 1081871 - 2¹⁰ = 1080847 is a prime.

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 1081871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081891) 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 5 ways as a sum of consecutive naturals, for example, 10991 + ... + 11088.

It is an arithmetic number, because the mean of its divisors is an integer number (209760).

2^1081871 is an apocalyptic number.

1081871 is a deficient number, since it is larger than the sum of its proper divisors (176689).

1081871 is an equidigital number, since it uses as much as digits as its factorization.

1081871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22093 (or 22086 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 26.

The square root of 1081871 is about 1040.1302803015. The cubic root of 1081871 is about 102.6577701198.

The spelling of 1081871 in words is "one million, eighty-one thousand, eight hundred seventy-one".