4243573 has 2 divisors, whose sum is σ = 4243574. Its totient is φ = 4243572.

The previous prime is 4243571. The next prime is 4243597. The reversal of 4243573 is 3753424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2289169 + 1954404 = 1513^2 + 1398^2 .

It is a cyclic number.

It is not a de Polignac number, because 4243573 - 2¹ = 4243571 is a prime.

Together with 4243571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4243571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121786 + 2121787.

It is an arithmetic number, because the mean of its divisors is an integer number (2121787).

Almost surely, 2^4243573 is an apocalyptic number.

It is an amenable number.

4243573 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243573 is an equidigital number, since it uses as much as digits as its factorization.

4243573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 28.

The square root of 4243573 is about 2059.9934465915. The cubic root of 4243573 is about 161.8988979490.

Adding to 4243573 its reverse (3753424), we get a palindrome (7996997).

The spelling of 4243573 in words is "four million, two hundred forty-three thousand, five hundred seventy-three".