163559 has 4 divisors (see below), whose sum is σ = 178440. Its totient is φ = 148680.

The previous prime is 163543. The next prime is 163561. The reversal of 163559 is 955361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 955361 = 11 ⋅86851.

It is a cyclic number.

It is not a de Polignac number, because 163559 - 2⁴ = 163543 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7424 + ... + 7445.

It is an arithmetic number, because the mean of its divisors is an integer number (44610).

2¹⁶³⁵⁵⁹ is an apocalyptic number.

163559 is a deficient number, since it is larger than the sum of its proper divisors (14881).

163559 is a wasteful number, since it uses less digits than its factorization.

163559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14880.

The product of its digits is 4050, while the sum is 29.

The square root of 163559 is about 404.4242821592. The cubic root of 163559 is about 54.6879296293.

The spelling of 163559 in words is "one hundred sixty-three thousand, five hundred fifty-nine".