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2271 = 3757

2271 has 4 divisors (see below), whose sum is σ = 3032. Its totient is φ = 1512.

The previous prime is 2269. The next prime is 2273. The reversal of 2271 is 1722.

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 (2269) and next prime (2273).

It is not a de Polignac number, because 2271 - 21 = 2269 is a prime.

It is a D-number.

It is a Duffinian number.

2271 is a lucky number.

It is a plaindrome in base 16.

It is a nialpdrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 2271.

It is not an unprimeable number, because it can be changed into a prime (2273) 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, 376 + ... + 381.

It is an arithmetic number, because the mean of its divisors is an integer number (758).

22271 is an apocalyptic number.

2271 is a deficient number, since it is larger than the sum of its proper divisors (761).

2271 is an equidigital number, since it uses as much as digits as its factorization.

2271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760.

The product of its digits is 28, while the sum is 12.

The square root of 2271 is about 47.6550102298. The cubic root of 2271 is about 13.1443478820.

Adding to 2271 its reverse (1722), we get a palindrome (3993).

The spelling of 2271 in words is "two thousand, two hundred seventy-one", and thus it is an iban number.

Divisors: 1 3 757 2271