159885857 has 4 divisors (see below), whose sum is σ = 166837440. Its totient is φ = 152934276.

The previous prime is 159885839. The next prime is 159885863. The reversal of 159885857 is 758588951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 159885857 - 2⁸ = 159885601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159885877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3475757 + ... + 3475802.

It is an arithmetic number, because the mean of its divisors is an integer number (41709360).

Almost surely, 2^159885857 is an apocalyptic number.

It is an amenable number.

159885857 is a deficient number, since it is larger than the sum of its proper divisors (6951583).

159885857 is an equidigital number, since it uses as much as digits as its factorization.

159885857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6951582.

The product of its digits is 4032000, while the sum is 56.

The square root of 159885857 is about 12644.5979374593. The cubic root of 159885857 is about 542.7543960371.

The spelling of 159885857 in words is "one hundred fifty-nine million, eight hundred eighty-five thousand, eight hundred fifty-seven".