205055803 has 2 divisors, whose sum is σ = 205055804. Its totient is φ = 205055802.

The previous prime is 205055779. The next prime is 205055821. The reversal of 205055803 is 308550502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205055803 is a prime.

It is not a weakly prime, because it can be changed into another prime (205055843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102527901 + 102527902.

It is an arithmetic number, because the mean of its divisors is an integer number (102527902).

Almost surely, 2^205055803 is an apocalyptic number.

205055803 is a deficient number, since it is larger than the sum of its proper divisors (1).

205055803 is an equidigital number, since it uses as much as digits as its factorization.

205055803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 205055803 is about 14319.7696559686. The cubic root of 205055803 is about 589.6903507780.

The spelling of 205055803 in words is "two hundred five million, fifty-five thousand, eight hundred three".