2271637 has 2 divisors, whose sum is σ = 2271638. Its totient is φ = 2271636.

The previous prime is 2271613. The next prime is 2271673. The reversal of 2271637 is 7361722.

Together with next prime (2271673) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2232036 + 39601 = 1494^2 + 199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2271637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2271037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135818 + 1135819.

It is an arithmetic number, because the mean of its divisors is an integer number (1135819).

2^2271637 is an apocalyptic number.

It is an amenable number.

2271637 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271637 is an equidigital number, since it uses as much as digits as its factorization.

2271637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 28.

The square root of 2271637 is about 1507.1950769559. The cubic root of 2271637 is about 131.4557673377.

The spelling of 2271637 in words is "two million, two hundred seventy-one thousand, six hundred thirty-seven".