205232057 has 2 divisors, whose sum is σ = 205232058. Its totient is φ = 205232056.

The previous prime is 205232021. The next prime is 205232087. The reversal of 205232057 is 750232502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188348176 + 16883881 = 13724^2 + 4109^2 .

It is a cyclic number.

It is not a de Polignac number, because 205232057 - 2⁶ = 205231993 is a prime.

It is not a weakly prime, because it can be changed into another prime (205232017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102616028 + 102616029.

It is an arithmetic number, because the mean of its divisors is an integer number (102616029).

Almost surely, 2^205232057 is an apocalyptic number.

It is an amenable number.

205232057 is a deficient number, since it is larger than the sum of its proper divisors (1).

205232057 is an equidigital number, since it uses as much as digits as its factorization.

205232057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 205232057 is about 14325.9225531901. The cubic root of 205232057 is about 589.8592568625.

Adding to 205232057 its reverse (750232502), we get a palindrome (955464559).

The spelling of 205232057 in words is "two hundred five million, two hundred thirty-two thousand, fifty-seven".