164172559 has 16 divisors (see below), whose sum is σ = 179368960. Its totient is φ = 149688000.

The previous prime is 164172557. The next prime is 164172563. The reversal of 164172559 is 955271461.

It is a cyclic number.

It is not a de Polignac number, because 164172559 - 2¹ = 164172557 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 (164172557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123619 + ... + 124939.

It is an arithmetic number, because the mean of its divisors is an integer number (11210560).

Almost surely, 2^164172559 is an apocalyptic number.

164172559 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

164172559 is a deficient number, since it is larger than the sum of its proper divisors (15196401).

164172559 is a wasteful number, since it uses less digits than its factorization.

164172559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582.

The product of its digits is 75600, while the sum is 40.

The square root of 164172559 is about 12812.9840006144. The cubic root of 164172559 is about 547.5622792174.

The spelling of 164172559 in words is "one hundred sixty-four million, one hundred seventy-two thousand, five hundred fifty-nine".