159787 has 2 divisors, whose sum is σ = 159788. Its totient is φ = 159786.

The previous prime is 159779. The next prime is 159791. The reversal of 159787 is 787951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 159787 - 2³ = 159779 is a prime.

It is not a weakly prime, because it can be changed into another prime (159707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79893 + 79894.

It is an arithmetic number, because the mean of its divisors is an integer number (79894).

2¹⁵⁹⁷⁸⁷ is an apocalyptic number.

159787 is a deficient number, since it is larger than the sum of its proper divisors (1).

159787 is an equidigital number, since it uses as much as digits as its factorization.

159787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 37.

The square root of 159787 is about 399.7336613296. The cubic root of 159787 is about 54.2642511775.

It can be divided in two parts, 159 and 787, that added together give a triangular number (946 = T₄₃).

The spelling of 159787 in words is "one hundred fifty-nine thousand, seven hundred eighty-seven".