2243563 has 16 divisors (see below), whose sum is σ = 2713600. Its totient is φ = 1852200.

The previous prime is 2243551. The next prime is 2243587. The reversal of 2243563 is 3653422.

2243563 = T₂₇ + T₂₈ + ... + T₂₃₇.

It is a happy number.

It is not a de Polignac number, because 2243563 - 2⁵ = 2243531 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 2¹⁹ + 4¹⁰ + 3¹⁰ + 5⁷ + 6² + 3¹² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2243503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10528 + ... + 10738.

It is an arithmetic number, because the mean of its divisors is an integer number (169600).

2^2243563 is an apocalyptic number.

2243563 is a deficient number, since it is larger than the sum of its proper divisors (470037).

2243563 is an equidigital number, since it uses as much as digits as its factorization.

2243563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 249 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 2243563 is about 1497.8527965057. The cubic root of 2243563 is about 130.9119895221.

Adding to 2243563 its reverse (3653422), we get a palindrome (5896985).

The spelling of 2243563 in words is "two million, two hundred forty-three thousand, five hundred sixty-three".