163546 has 4 divisors (see below), whose sum is σ = 245322. Its totient is φ = 81772.

The previous prime is 163543. The next prime is 163561. The reversal of 163546 is 645361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 645361 = 227 ⋅2843.

It can be written as a sum of positive squares in only one way, i.e., 119025 + 44521 = 345^2 + 211^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 163546.

It is not an unprimeable number, because it can be changed into a prime (163543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40885 + ... + 40888.

2¹⁶³⁵⁴⁶ is an apocalyptic number.

163546 is a deficient number, since it is larger than the sum of its proper divisors (81776).

163546 is an equidigital number, since it uses as much as digits as its factorization.

163546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81775.

The product of its digits is 2160, while the sum is 25.

The square root of 163546 is about 404.4082096100. The cubic root of 163546 is about 54.6864806885.

It can be divided in two parts, 1635 and 46, that added together give a square (1681 = 41²).

The spelling of 163546 in words is "one hundred sixty-three thousand, five hundred forty-six".