255876161 has 2 divisors, whose sum is σ = 255876162. Its totient is φ = 255876160.

The previous prime is 255876109. The next prime is 255876199. The reversal of 255876161 is 161678552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251698225 + 4177936 = 15865^2 + 2044^2 .

It is a cyclic number.

It is not a de Polignac number, because 255876161 - 2²⁶ = 188767297 is a prime.

It is not a weakly prime, because it can be changed into another prime (254876161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127938080 + 127938081.

It is an arithmetic number, because the mean of its divisors is an integer number (127938081).

Almost surely, 2^255876161 is an apocalyptic number.

It is an amenable number.

255876161 is a deficient number, since it is larger than the sum of its proper divisors (1).

255876161 is an equidigital number, since it uses as much as digits as its factorization.

255876161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 41.

The square root of 255876161 is about 15996.1295631162. The cubic root of 255876161 is about 634.8580177321.

The spelling of 255876161 in words is "two hundred fifty-five million, eight hundred seventy-six thousand, one hundred sixty-one".