20500063 has 2 divisors, whose sum is σ = 20500064. Its totient is φ = 20500062.

The previous prime is 20500049. The next prime is 20500091. The reversal of 20500063 is 36000502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20500063 - 2⁹ = 20499551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20500033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10250031 + 10250032.

It is an arithmetic number, because the mean of its divisors is an integer number (10250032).

Almost surely, 2^20500063 is an apocalyptic number.

20500063 is a deficient number, since it is larger than the sum of its proper divisors (1).

20500063 is an equidigital number, since it uses as much as digits as its factorization.

20500063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20500063 is about 4527.6995262495. The cubic root of 20500063 is about 273.6854641001.

Adding to 20500063 its reverse (36000502), we get a palindrome (56500565).

The spelling of 20500063 in words is "twenty million, five hundred thousand, sixty-three".