2266261 has 4 divisors (see below), whose sum is σ = 2270572. Its totient is φ = 2261952.

The previous prime is 2266247. The next prime is 2266267. The reversal of 2266261 is 1626622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1626622 = 2 ⋅813311.

It can be written as a sum of positive squares in 2 ways, for example, as 72900 + 2193361 = 270^2 + 1481^2 .

It is a cyclic number.

It is not a de Polignac number, because 2266261 - 2⁷ = 2266133 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 (2266267) 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, 1236 + ... + 2461.

It is an arithmetic number, because the mean of its divisors is an integer number (567643).

2^2266261 is an apocalyptic number.

It is an amenable number.

2266261 is a deficient number, since it is larger than the sum of its proper divisors (4311).

2266261 is an equidigital number, since it uses as much as digits as its factorization.

2266261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4310.

The product of its digits is 1728, while the sum is 25.

The square root of 2266261 is about 1505.4105752252. The cubic root of 2266261 is about 131.3519854350.

The spelling of 2266261 in words is "two million, two hundred sixty-six thousand, two hundred sixty-one".