2243261 has 2 divisors, whose sum is σ = 2243262. Its totient is φ = 2243260.

The previous prime is 2243257. The next prime is 2243281. The reversal of 2243261 is 1623422.

It is an a-pointer prime, because the next prime (2243281) can be obtained adding 2243261 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2088025 + 155236 = 1445^2 + 394^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243261 - 2² = 2243257 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121630 + 1121631.

It is an arithmetic number, because the mean of its divisors is an integer number (1121631).

2^2243261 is an apocalyptic number.

It is an amenable number.

2243261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243261 is an equidigital number, since it uses as much as digits as its factorization.

2243261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 20.

The square root of 2243261 is about 1497.7519821386. The cubic root of 2243261 is about 130.9061153545.

Adding to 2243261 its reverse (1623422), we get a palindrome (3866683).

The spelling of 2243261 in words is "two million, two hundred forty-three thousand, two hundred sixty-one".