205455533 has 2 divisors, whose sum is σ = 205455534. Its totient is φ = 205455532.

The previous prime is 205455529. The next prime is 205455571. The reversal of 205455533 is 335554502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139877929 + 65577604 = 11827^2 + 8098^2 .

It is a cyclic number.

It is not a de Polignac number, because 205455533 - 2² = 205455529 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205455533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205454533) 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, 102727766 + 102727767.

It is an arithmetic number, because the mean of its divisors is an integer number (102727767).

Almost surely, 2^205455533 is an apocalyptic number.

It is an amenable number.

205455533 is a deficient number, since it is larger than the sum of its proper divisors (1).

205455533 is an equidigital number, since it uses as much as digits as its factorization.

205455533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45000, while the sum is 32.

The square root of 205455533 is about 14333.7201381916. The cubic root of 205455533 is about 590.0732773106.

The spelling of 205455533 in words is "two hundred five million, four hundred fifty-five thousand, five hundred thirty-three".