2273261 has 4 divisors (see below), whose sum is σ = 2346624. Its totient is φ = 2199900.

The previous prime is 2273239. The next prime is 2273267. The reversal of 2273261 is 1623722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1623722 = 2 ⋅811861.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2273261 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 (2273267) 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, 36635 + ... + 36696.

It is an arithmetic number, because the mean of its divisors is an integer number (586656).

2^2273261 is an apocalyptic number.

It is an amenable number.

2273261 is a deficient number, since it is larger than the sum of its proper divisors (73363).

2273261 is an equidigital number, since it uses as much as digits as its factorization.

2273261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73362.

The product of its digits is 1008, while the sum is 23.

The square root of 2273261 is about 1507.7337298078. The cubic root of 2273261 is about 131.4870859144.

Adding to 2273261 its reverse (1623722), we get a palindrome (3896983).

The spelling of 2273261 in words is "two million, two hundred seventy-three thousand, two hundred sixty-one".