2271265 has 4 divisors (see below), whose sum is σ = 2725524. Its totient is φ = 1817008.

The previous prime is 2271263. The next prime is 2271271. The reversal of 2271265 is 5621722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5621722 = 2 ⋅2810861.

It can be written as a sum of positive squares in 2 ways, for example, as 1175056 + 1096209 = 1084^2 + 1047^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271265 - 2¹ = 2271263 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 (2271263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227122 + ... + 227131.

It is an arithmetic number, because the mean of its divisors is an integer number (681381).

2^2271265 is an apocalyptic number.

It is an amenable number.

2271265 is a deficient number, since it is larger than the sum of its proper divisors (454259).

2271265 is an equidigital number, since it uses as much as digits as its factorization.

2271265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454258.

The product of its digits is 1680, while the sum is 25.

The square root of 2271265 is about 1507.0716638568. The cubic root of 2271265 is about 131.4485912770.

Adding to 2271265 its reverse (5621722), we get a palindrome (7892987).

The spelling of 2271265 in words is "two million, two hundred seventy-one thousand, two hundred sixty-five".