2081271 has 4 divisors (see below), whose sum is σ = 2775032. Its totient is φ = 1387512.

The previous prime is 2081267. The next prime is 2081273. The reversal of 2081271 is 1721802.

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

It is not a de Polignac number, because 2081271 - 2² = 2081267 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081273) 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, 346876 + ... + 346881.

It is an arithmetic number, because the mean of its divisors is an integer number (693758).

2^2081271 is an apocalyptic number.

2081271 is a deficient number, since it is larger than the sum of its proper divisors (693761).

2081271 is an equidigital number, since it uses as much as digits as its factorization.

2081271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693760.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 2081271 is about 1442.6610828604. The cubic root of 2081271 is about 127.6760812054.

The spelling of 2081271 in words is "two million, eighty-one thousand, two hundred seventy-one".