20043253 has 2 divisors, whose sum is σ = 20043254. Its totient is φ = 20043252.

The previous prime is 20043241. The next prime is 20043259. The reversal of 20043253 is 35234002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18130564 + 1912689 = 4258^2 + 1383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20043253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20043253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20043259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021626 + 10021627.

It is an arithmetic number, because the mean of its divisors is an integer number (10021627).

Almost surely, 2^20043253 is an apocalyptic number.

It is an amenable number.

20043253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20043253 is an equidigital number, since it uses as much as digits as its factorization.

20043253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20043253 is about 4476.9691756812. The cubic root of 20043253 is about 271.6372986098.

Adding to 20043253 its reverse (35234002), we get a palindrome (55277255).

The spelling of 20043253 in words is "twenty million, forty-three thousand, two hundred fifty-three".