164501 has 4 divisors (see below), whose sum is σ = 165600. Its totient is φ = 163404.

The previous prime is 164477. The next prime is 164503. The reversal of 164501 is 105461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 105461 = 163 ⋅647.

It is a cyclic number.

It is not a de Polignac number, because 164501 - 2¹⁰ = 163477 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 164501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281 + ... + 638.

It is an arithmetic number, because the mean of its divisors is an integer number (41400).

2¹⁶⁴⁵⁰¹ is an apocalyptic number.

It is an amenable number.

164501 is a deficient number, since it is larger than the sum of its proper divisors (1099).

164501 is an equidigital number, since it uses as much as digits as its factorization.

164501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 164501 is about 405.5872285958. The cubic root of 164501 is about 54.7927184102.

Adding to 164501 its reverse (105461), we get a palindrome (269962).

The spelling of 164501 in words is "one hundred sixty-four thousand, five hundred one".