159977 has 2 divisors, whose sum is σ = 159978. Its totient is φ = 159976.

The previous prime is 159937. The next prime is 159979. The reversal of 159977 is 779951.

159977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

159977 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87616 + 72361 = 296^2 + 269^2 .

It is a cyclic number.

It is not a de Polignac number, because 159977 - 2⁸ = 159721 is a prime.

Together with 159979, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159977.

It is not a weakly prime, because it can be changed into another prime (159979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79988 + 79989.

It is an arithmetic number, because the mean of its divisors is an integer number (79989).

2¹⁵⁹⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

159977 is a deficient number, since it is larger than the sum of its proper divisors (1).

159977 is an equidigital number, since it uses as much as digits as its factorization.

159977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19845, while the sum is 38.

The square root of 159977 is about 399.9712489667. The cubic root of 159977 is about 54.2857508904.

The spelling of 159977 in words is "one hundred fifty-nine thousand, nine hundred seventy-seven".