159569 has 2 divisors, whose sum is σ = 159570. Its totient is φ = 159568.

The previous prime is 159563. The next prime is 159571. The reversal of 159569 is 965951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150544 + 9025 = 388^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 159569 - 2⁴ = 159553 is a prime.

It is a super-2 number, since 2×159569² = 50924531522, which contains 22 as substring.

Together with 159571, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 11.

It is not a weakly prime, because it can be changed into another prime (159563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79784 + 79785.

It is an arithmetic number, because the mean of its divisors is an integer number (79785).

2¹⁵⁹⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

159569 is a deficient number, since it is larger than the sum of its proper divisors (1).

159569 is an equidigital number, since it uses as much as digits as its factorization.

159569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150, while the sum is 35.

The square root of 159569 is about 399.4608866961. The cubic root of 159569 is about 54.2395620797.

The spelling of 159569 in words is "one hundred fifty-nine thousand, five hundred sixty-nine".