2261783 has 4 divisors (see below), whose sum is σ = 2265240. Its totient is φ = 2258328.

The previous prime is 2261771. The next prime is 2261789. The reversal of 2261783 is 3871622.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3871622 = 2 ⋅1935811.

It is a cyclic number.

It is not a de Polignac number, because 2261783 - 2¹⁰ = 2260759 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 (2261789) 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, 413 + ... + 2166.

It is an arithmetic number, because the mean of its divisors is an integer number (566310).

2^2261783 is an apocalyptic number.

2261783 is a deficient number, since it is larger than the sum of its proper divisors (3457).

2261783 is an equidigital number, since it uses as much as digits as its factorization.

2261783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456.

The product of its digits is 4032, while the sum is 29.

The square root of 2261783 is about 1503.9225378988. The cubic root of 2261783 is about 131.2654137604.

The spelling of 2261783 in words is "two million, two hundred sixty-one thousand, seven hundred eighty-three".