205273157 has 2 divisors, whose sum is σ = 205273158. Its totient is φ = 205273156.

The previous prime is 205273139. The next prime is 205273171. The reversal of 205273157 is 751372502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127938721 + 77334436 = 11311^2 + 8794^2 .

It is a cyclic number.

It is not a de Polignac number, because 205273157 - 2¹⁸ = 205011013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205273127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102636578 + 102636579.

It is an arithmetic number, because the mean of its divisors is an integer number (102636579).

Almost surely, 2^205273157 is an apocalyptic number.

It is an amenable number.

205273157 is a deficient number, since it is larger than the sum of its proper divisors (1).

205273157 is an equidigital number, since it uses as much as digits as its factorization.

205273157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 205273157 is about 14327.3569439726. The cubic root of 205273157 is about 589.8986295246.

The spelling of 205273157 in words is "two hundred five million, two hundred seventy-three thousand, one hundred fifty-seven".