20508083 has 2 divisors, whose sum is σ = 20508084. Its totient is φ = 20508082.

The previous prime is 20508071. The next prime is 20508113. The reversal of 20508083 is 38080502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20508083 - 2¹⁴ = 20491699 is a prime.

It is not a weakly prime, because it can be changed into another prime (20508043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10254041 + 10254042.

It is an arithmetic number, because the mean of its divisors is an integer number (10254042).

Almost surely, 2^20508083 is an apocalyptic number.

20508083 is a deficient number, since it is larger than the sum of its proper divisors (1).

20508083 is an equidigital number, since it uses as much as digits as its factorization.

20508083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 20508083 is about 4528.5850991231. The cubic root of 20508083 is about 273.7211497018.

Adding to 20508083 its reverse (38080502), we get a palindrome (58588585).

The spelling of 20508083 in words is "twenty million, five hundred eight thousand, eighty-three".