255930161 has 2 divisors, whose sum is σ = 255930162. Its totient is φ = 255930160.

The previous prime is 255930149. The next prime is 255930167. The reversal of 255930161 is 161039552.

255930161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183765136 + 72165025 = 13556^2 + 8495^2 .

It is a cyclic number.

It is not a de Polignac number, because 255930161 - 2¹⁰ = 255929137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (255930167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127965080 + 127965081.

It is an arithmetic number, because the mean of its divisors is an integer number (127965081).

Almost surely, 2^255930161 is an apocalyptic number.

It is an amenable number.

255930161 is a deficient number, since it is larger than the sum of its proper divisors (1).

255930161 is an equidigital number, since it uses as much as digits as its factorization.

255930161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 255930161 is about 15997.8173823806. The cubic root of 255930161 is about 634.9026746493.

The spelling of 255930161 in words is "two hundred fifty-five million, nine hundred thirty thousand, one hundred sixty-one".