164503 has 2 divisors, whose sum is σ = 164504. Its totient is φ = 164502.

The previous prime is 164477. The next prime is 164513. The reversal of 164503 is 305461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164503 - 2⁵ = 164471 is a prime.

It is a super-2 number, since 2×164503² = 54122474018, which contains 22 as substring.

164503 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82251 + 82252.

It is an arithmetic number, because the mean of its divisors is an integer number (82252).

2¹⁶⁴⁵⁰³ is an apocalyptic number.

164503 is a deficient number, since it is larger than the sum of its proper divisors (1).

164503 is an equidigital number, since it uses as much as digits as its factorization.

164503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 164503 is about 405.5896941491. The cubic root of 164503 is about 54.7929404656.

Adding to 164503 its reverse (305461), we get a palindrome (469964).

The spelling of 164503 in words is "one hundred sixty-four thousand, five hundred three".