159857 has 2 divisors, whose sum is σ = 159858. Its totient is φ = 159856.

The previous prime is 159853. The next prime is 159869. The reversal of 159857 is 758951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128881 + 30976 = 359^2 + 176^2 .

It is a cyclic number.

It is not a de Polignac number, because 159857 - 2² = 159853 is a prime.

It is not a weakly prime, because it can be changed into another prime (159853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79928 + 79929.

It is an arithmetic number, because the mean of its divisors is an integer number (79929).

2¹⁵⁹⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

159857 is a deficient number, since it is larger than the sum of its proper divisors (1).

159857 is an equidigital number, since it uses as much as digits as its factorization.

159857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 35.

The square root of 159857 is about 399.8212100427. The cubic root of 159857 is about 54.2721741062.

The spelling of 159857 in words is "one hundred fifty-nine thousand, eight hundred fifty-seven".