205571141 has 2 divisors, whose sum is σ = 205571142. Its totient is φ = 205571140.

The previous prime is 205571101. The next prime is 205571147. The reversal of 205571141 is 141175502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194714116 + 10857025 = 13954^2 + 3295^2 .

It is a cyclic number.

It is not a de Polignac number, because 205571141 - 2⁶ = 205571077 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 205571141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205571147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102785570 + 102785571.

It is an arithmetic number, because the mean of its divisors is an integer number (102785571).

Almost surely, 2^205571141 is an apocalyptic number.

It is an amenable number.

205571141 is a deficient number, since it is larger than the sum of its proper divisors (1).

205571141 is an equidigital number, since it uses as much as digits as its factorization.

205571141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 205571141 is about 14337.7522994366. The cubic root of 205571141 is about 590.1839328855.

The spelling of 205571141 in words is "two hundred five million, five hundred seventy-one thousand, one hundred forty-one".