20536193 has 2 divisors, whose sum is σ = 20536194. Its totient is φ = 20536192.

The previous prime is 20536181. The next prime is 20536213. The reversal of 20536193 is 39163502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19775809 + 760384 = 4447^2 + 872^2 .

It is a cyclic number.

It is not a de Polignac number, because 20536193 - 2¹⁰ = 20535169 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20536123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10268096 + 10268097.

It is an arithmetic number, because the mean of its divisors is an integer number (10268097).

Almost surely, 2^20536193 is an apocalyptic number.

It is an amenable number.

20536193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20536193 is an equidigital number, since it uses as much as digits as its factorization.

20536193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 20536193 is about 4531.6876547264. The cubic root of 20536193 is about 273.8461538886.

Adding to 20536193 its reverse (39163502), we get a palindrome (59699695).

The spelling of 20536193 in words is "twenty million, five hundred thirty-six thousand, one hundred ninety-three".