20502341 has 2 divisors, whose sum is σ = 20502342. Its totient is φ = 20502340.

The previous prime is 20502319. The next prime is 20502347. The reversal of 20502341 is 14320502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19838116 + 664225 = 4454^2 + 815^2 .

It is a cyclic number.

It is not a de Polignac number, because 20502341 - 2¹⁸ = 20240197 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20502347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10251170 + 10251171.

It is an arithmetic number, because the mean of its divisors is an integer number (10251171).

Almost surely, 2^20502341 is an apocalyptic number.

It is an amenable number.

20502341 is a deficient number, since it is larger than the sum of its proper divisors (1).

20502341 is an equidigital number, since it uses as much as digits as its factorization.

20502341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20502341 is about 4527.9510818912. The cubic root of 20502341 is about 273.6956011810.

Adding to 20502341 its reverse (14320502), we get a palindrome (34822843).

The spelling of 20502341 in words is "twenty million, five hundred two thousand, three hundred forty-one".