2243751 has 4 divisors (see below), whose sum is σ = 2991672. Its totient is φ = 1495832.

The previous prime is 2243743. The next prime is 2243753. The reversal of 2243751 is 1573422.

2243751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2243751 - 2³ = 2243743 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373956 + ... + 373961.

It is an arithmetic number, because the mean of its divisors is an integer number (747918).

2^2243751 is an apocalyptic number.

2243751 is a deficient number, since it is larger than the sum of its proper divisors (747921).

2243751 is an equidigital number, since it uses as much as digits as its factorization.

2243751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747920.

The product of its digits is 1680, while the sum is 24.

The square root of 2243751 is about 1497.9155516918. The cubic root of 2243751 is about 130.9156460224.

The spelling of 2243751 in words is "two million, two hundred forty-three thousand, seven hundred fifty-one".