2273 has 2 divisors, whose sum is σ = 2274. Its totient is φ = 2272.

The previous prime is 2269. The next prime is 2281. The reversal of 2273 is 3722.

Added to its reverse (3722) it gives a triangular number (5995 = T₁₀₉).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2209 + 64 = 47^2 + 8^2 .

It is a cyclic number.

It is not a de Polignac number, because 2273 - 2² = 2269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₃₃₈ and since 2273 and 338 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1136 + 1137.

It is an arithmetic number, because the mean of its divisors is an integer number (1137).

2²²⁷³ is an apocalyptic number.

It is an amenable number.

2273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2273 is an equidigital number, since it uses as much as digits as its factorization.

2273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84, while the sum is 14.

The square root of 2273 is about 47.6759897642. The cubic root of 2273 is about 13.1482053578.

Adding to 2273 its reverse (3722), we get a palindrome (5995).

The spelling of 2273 in words is "two thousand, two hundred seventy-three", and thus it is an iban number.