2261444 has 6 divisors (see below), whose sum is σ = 3957534. Its totient is φ = 1130720.

The previous prime is 2261407. The next prime is 2261447. The reversal of 2261444 is 4441622.

It can be written as a sum of positive squares in only one way, i.e., 2067844 + 193600 = 1438^2 + 440^2 .

It is a super-2 number, since 2×2261444² = 10228257930272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261447) 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 as a sum of consecutive naturals, namely, 282677 + ... + 282684.

It is an arithmetic number, because the mean of its divisors is an integer number (659589).

2^2261444 is an apocalyptic number.

It is an amenable number.

2261444 is a deficient number, since it is larger than the sum of its proper divisors (1696090).

2261444 is a wasteful number, since it uses less digits than its factorization.

2261444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565365 (or 565363 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 2261444 is about 1503.8098284025. The cubic root of 2261444 is about 131.2588553360.

The spelling of 2261444 in words is "two million, two hundred sixty-one thousand, four hundred forty-four".