20242253 has 2 divisors, whose sum is σ = 20242254. Its totient is φ = 20242252.

The previous prime is 20242247. The next prime is 20242273. The reversal of 20242253 is 35224202.

It is an a-pointer prime, because the next prime (20242273) can be obtained adding 20242253 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19166884 + 1075369 = 4378^2 + 1037^2 .

It is a cyclic number.

It is not a de Polignac number, because 20242253 - 2¹⁰ = 20241229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20242213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121126 + 10121127.

It is an arithmetic number, because the mean of its divisors is an integer number (10121127).

Almost surely, 2^20242253 is an apocalyptic number.

It is an amenable number.

20242253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20242253 is an equidigital number, since it uses as much as digits as its factorization.

20242253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20242253 is about 4499.1391398800. The cubic root of 20242253 is about 272.5333258908.

Adding to 20242253 its reverse (35224202), we get a palindrome (55466455).

The spelling of 20242253 in words is "twenty million, two hundred forty-two thousand, two hundred fifty-three".