2243851 has 2 divisors, whose sum is σ = 2243852. Its totient is φ = 2243850.

The previous prime is 2243833. The next prime is 2243887. The reversal of 2243851 is 1583422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2243851 - 2⁵ = 2243819 is a prime.

It is not a weakly prime, because it can be changed into another prime (2243821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121925 + 1121926.

It is an arithmetic number, because the mean of its divisors is an integer number (1121926).

2^2243851 is an apocalyptic number.

2243851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243851 is an equidigital number, since it uses as much as digits as its factorization.

2243851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 2243851 is about 1497.9489310387. The cubic root of 2243851 is about 130.9175908862.

The spelling of 2243851 in words is "two million, two hundred forty-three thousand, eight hundred fifty-one".