163558 has 8 divisors (see below), whose sum is σ = 250128. Its totient is φ = 80184.

The previous prime is 163543. The next prime is 163561. The reversal of 163558 is 855361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666 + ... + 877.

It is an arithmetic number, because the mean of its divisors is an integer number (31266).

2¹⁶³⁵⁵⁸ is an apocalyptic number.

163558 is a deficient number, since it is larger than the sum of its proper divisors (86570).

163558 is a wasteful number, since it uses less digits than its factorization.

163558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598.

The product of its digits is 3600, while the sum is 28.

The square root of 163558 is about 404.4230458320. The cubic root of 163558 is about 54.6878181750.

It can be divided in two parts, 1635 and 58, that multiplied together give a triangular number (94830 = T₄₃₅).

The spelling of 163558 in words is "one hundred sixty-three thousand, five hundred fifty-eight".