164544517 has 2 divisors, whose sum is σ = 164544518. Its totient is φ = 164544516.

The previous prime is 164544491. The next prime is 164544529. The reversal of 164544517 is 715445461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117635716 + 46908801 = 10846^2 + 6849^2 .

It is an emirp because it is prime and its reverse (715445461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164544517 - 2¹⁵ = 164511749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164544577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82272258 + 82272259.

It is an arithmetic number, because the mean of its divisors is an integer number (82272259).

Almost surely, 2^164544517 is an apocalyptic number.

It is an amenable number.

164544517 is a deficient number, since it is larger than the sum of its proper divisors (1).

164544517 is an equidigital number, since it uses as much as digits as its factorization.

164544517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 37.

The square root of 164544517 is about 12827.4906743291. The cubic root of 164544517 is about 547.9754959562.

Adding to 164544517 its reverse (715445461), we get a palindrome (879989978).

The spelling of 164544517 in words is "one hundred sixty-four million, five hundred forty-four thousand, five hundred seventeen".