205103153 has 2 divisors, whose sum is σ = 205103154. Its totient is φ = 205103152.

The previous prime is 205103141. The next prime is 205103207. The reversal of 205103153 is 351301502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154579489 + 50523664 = 12433^2 + 7108^2 .

It is a cyclic number.

It is not a de Polignac number, because 205103153 - 2⁴ = 205103137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205103653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102551576 + 102551577.

It is an arithmetic number, because the mean of its divisors is an integer number (102551577).

Almost surely, 2^205103153 is an apocalyptic number.

It is an amenable number.

205103153 is a deficient number, since it is larger than the sum of its proper divisors (1).

205103153 is an equidigital number, since it uses as much as digits as its factorization.

205103153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 205103153 is about 14321.4228692543. The cubic root of 205103153 is about 589.7357362922.

Adding to 205103153 its reverse (351301502), we get a palindrome (556404655).

The spelling of 205103153 in words is "two hundred five million, one hundred three thousand, one hundred fifty-three".