163541 has 8 divisors (see below), whose sum is σ = 190464. Its totient is φ = 137520.

The previous prime is 163517. The next prime is 163543. The reversal of 163541 is 145361.

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

It is a cyclic number.

It is not a de Polignac number, because 163541 - 2⁶ = 163477 is a prime.

It is a Duffinian number.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 236 + ... + 618.

It is an arithmetic number, because the mean of its divisors is an integer number (23808).

2¹⁶³⁵⁴¹ is an apocalyptic number.

It is an amenable number.

163541 is a deficient number, since it is larger than the sum of its proper divisors (26923).

163541 is an equidigital number, since it uses as much as digits as its factorization.

163541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its digits is 360, while the sum is 20.

The square root of 163541 is about 404.4020276903. The cubic root of 163541 is about 54.6859233831.

The spelling of 163541 in words is "one hundred sixty-three thousand, five hundred forty-one".