20253241 has 2 divisors, whose sum is σ = 20253242. Its totient is φ = 20253240.

The previous prime is 20253209. The next prime is 20253347. The reversal of 20253241 is 14235202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12250000 + 8003241 = 3500^2 + 2829^2 .

It is a cyclic number.

It is not a de Polignac number, because 20253241 - 2⁵ = 20253209 is a prime.

It is a super-3 number, since 3×20253241³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20251241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10126620 + 10126621.

It is an arithmetic number, because the mean of its divisors is an integer number (10126621).

Almost surely, 2^20253241 is an apocalyptic number.

It is an amenable number.

20253241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20253241 is an equidigital number, since it uses as much as digits as its factorization.

20253241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20253241 is about 4500.3600967034. The cubic root of 20253241 is about 272.5826296006.

Adding to 20253241 its reverse (14235202), we get a palindrome (34488443).

The spelling of 20253241 in words is "twenty million, two hundred fifty-three thousand, two hundred forty-one".