205435001 has 2 divisors, whose sum is σ = 205435002. Its totient is φ = 205435000.

The previous prime is 205434947. The next prime is 205435099. The reversal of 205435001 is 100534502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151265401 + 54169600 = 12299^2 + 7360^2 .

It is a cyclic number.

It is not a de Polignac number, because 205435001 - 2⁶ = 205434937 is a prime.

It is a Chen prime.

It is equal to p_11363141 and since 205435001 and 11363141 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (205435501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102717500 + 102717501.

It is an arithmetic number, because the mean of its divisors is an integer number (102717501).

Almost surely, 2^205435001 is an apocalyptic number.

It is an amenable number.

205435001 is a deficient number, since it is larger than the sum of its proper divisors (1).

205435001 is an equidigital number, since it uses as much as digits as its factorization.

205435001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 205435001 is about 14333.0039070671. The cubic root of 205435001 is about 590.0536205217.

Adding to 205435001 its reverse (100534502), we get a palindrome (305969503).

The spelling of 205435001 in words is "two hundred five million, four hundred thirty-five thousand, one".