2821271 has 4 divisors (see below), whose sum is σ = 2846352. Its totient is φ = 2796192.

The previous prime is 2821267. The next prime is 2821277. The reversal of 2821271 is 1721282.

2821271 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 an emirpimes, since its reverse is a distinct semiprime: 1721282 = 2 ⋅860641.

It is a cyclic number.

It is not a de Polignac number, because 2821271 - 2² = 2821267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12371 + ... + 12596.

It is an arithmetic number, because the mean of its divisors is an integer number (711588).

2^2821271 is an apocalyptic number.

2821271 is a deficient number, since it is larger than the sum of its proper divisors (25081).

2821271 is a wasteful number, since it uses less digits than its factorization.

2821271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25080.

The product of its digits is 448, while the sum is 23.

The square root of 2821271 is about 1679.6639544861. The cubic root of 2821271 is about 141.3019867637.

The spelling of 2821271 in words is "two million, eight hundred twenty-one thousand, two hundred seventy-one".