2243533 has 4 divisors (see below), whose sum is σ = 2247868. Its totient is φ = 2239200.

The previous prime is 2243531. The next prime is 2243537. The reversal of 2243533 is 3353422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3353422 = 2 ⋅1676711.

It can be written as a sum of positive squares in 2 ways, for example, as 1582564 + 660969 = 1258^2 + 813^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243533 - 2¹ = 2243531 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243531) 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, 1266 + ... + 2467.

It is an arithmetic number, because the mean of its divisors is an integer number (561967).

2^2243533 is an apocalyptic number.

It is an amenable number.

2243533 is a deficient number, since it is larger than the sum of its proper divisors (4335).

2243533 is an equidigital number, since it uses as much as digits as its factorization.

2243533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334.

The product of its digits is 2160, while the sum is 22.

The square root of 2243533 is about 1497.8427821370. The cubic root of 2243533 is about 130.9114060191.

Adding to 2243533 its reverse (3353422), we get a palindrome (5596955).

The spelling of 2243533 in words is "two million, two hundred forty-three thousand, five hundred thirty-three".