257675161 has 2 divisors, whose sum is σ = 257675162. Its totient is φ = 257675160.

The previous prime is 257675129. The next prime is 257675167. The reversal of 257675161 is 161576752.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257409936 + 265225 = 16044^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 257675161 - 2⁵ = 257675129 is a prime.

It is not a weakly prime, because it can be changed into another prime (257675167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128837580 + 128837581.

It is an arithmetic number, because the mean of its divisors is an integer number (128837581).

Almost surely, 2^257675161 is an apocalyptic number.

It is an amenable number.

257675161 is a deficient number, since it is larger than the sum of its proper divisors (1).

257675161 is an equidigital number, since it uses as much as digits as its factorization.

257675161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 40.

The square root of 257675161 is about 16052.2634229569. The cubic root of 257675161 is about 636.3423859886.

The spelling of 257675161 in words is "two hundred fifty-seven million, six hundred seventy-five thousand, one hundred sixty-one".