159513857 has 2 divisors, whose sum is σ = 159513858. Its totient is φ = 159513856.

The previous prime is 159513847. The next prime is 159513859. The reversal of 159513857 is 758315951.

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., 125978176 + 33535681 = 11224^2 + 5791^2 .

It is a cyclic number.

It is not a de Polignac number, because 159513857 - 2⁶ = 159513793 is a prime.

Together with 159513859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (159513859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79756928 + 79756929.

It is an arithmetic number, because the mean of its divisors is an integer number (79756929).

Almost surely, 2^159513857 is an apocalyptic number.

It is an amenable number.

159513857 is a deficient number, since it is larger than the sum of its proper divisors (1).

159513857 is an equidigital number, since it uses as much as digits as its factorization.

159513857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189000, while the sum is 44.

The square root of 159513857 is about 12629.8795322838. The cubic root of 159513857 is about 542.3331342077. Note that the first 3 decimals are identical.

The spelling of 159513857 in words is "one hundred fifty-nine million, five hundred thirteen thousand, eight hundred fifty-seven".