20655203 has 2 divisors, whose sum is σ = 20655204. Its totient is φ = 20655202.

The previous prime is 20655199. The next prime is 20655227. The reversal of 20655203 is 30255602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20655203 - 2² = 20655199 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20655263) 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, 10327601 + 10327602.

It is an arithmetic number, because the mean of its divisors is an integer number (10327602).

Almost surely, 2^20655203 is an apocalyptic number.

20655203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20655203 is an equidigital number, since it uses as much as digits as its factorization.

20655203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 20655203 is about 4544.7995555360. The cubic root of 20655203 is about 274.3741270687.

The spelling of 20655203 in words is "twenty million, six hundred fifty-five thousand, two hundred three".