205017473 has 2 divisors, whose sum is σ = 205017474. Its totient is φ = 205017472.

The previous prime is 205017451. The next prime is 205017487. The reversal of 205017473 is 374710502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116035984 + 88981489 = 10772^2 + 9433^2 .

It is a cyclic number.

It is not a de Polignac number, because 205017473 - 2⁸ = 205017217 is a prime.

It is not a weakly prime, because it can be changed into another prime (205017493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102508736 + 102508737.

It is an arithmetic number, because the mean of its divisors is an integer number (102508737).

Almost surely, 2^205017473 is an apocalyptic number.

It is an amenable number.

205017473 is a deficient number, since it is larger than the sum of its proper divisors (1).

205017473 is an equidigital number, since it uses as much as digits as its factorization.

205017473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 205017473 is about 14318.4312339027. The cubic root of 205017473 is about 589.6536059191.

Adding to 205017473 its reverse (374710502), we get a palindrome (579727975).

The spelling of 205017473 in words is "two hundred five million, seventeen thousand, four hundred seventy-three".