2261791 has 12 divisors (see below), whose sum is σ = 2717760. Its totient is φ = 1874880.

The previous prime is 2261789. The next prime is 2261801. The reversal of 2261791 is 1971622.

It is a happy number.

It is not a de Polignac number, because 2261791 - 2¹ = 2261789 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 (2261771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 775 + ... + 2263.

It is an arithmetic number, because the mean of its divisors is an integer number (226480).

2^2261791 is an apocalyptic number.

2261791 is a deficient number, since it is larger than the sum of its proper divisors (455969).

2261791 is a wasteful number, since it uses less digits than its factorization.

2261791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534 (or 1527 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 2261791 is about 1503.9251976079. The cubic root of 2261791 is about 131.2655685236.

The spelling of 2261791 in words is "two million, two hundred sixty-one thousand, seven hundred ninety-one".