20104361 has 2 divisors, whose sum is σ = 20104362. Its totient is φ = 20104360.

The previous prime is 20104351. The next prime is 20104367. The reversal of 20104361 is 16340102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10118761 + 9985600 = 3181^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 20104361 - 2¹⁸ = 19842217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20104367) 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, 10052180 + 10052181.

It is an arithmetic number, because the mean of its divisors is an integer number (10052181).

Almost surely, 2^20104361 is an apocalyptic number.

It is an amenable number.

20104361 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104361 is an equidigital number, since it uses as much as digits as its factorization.

20104361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20104361 is about 4483.7886881520. The cubic root of 20104361 is about 271.9130750568.

Adding to 20104361 its reverse (16340102), we get a palindrome (36444463).

The spelling of 20104361 in words is "twenty million, one hundred four thousand, three hundred sixty-one".