172164441 has 16 divisors (see below), whose sum is σ = 238997504. Its totient is φ = 110139264.

The previous prime is 172164437. The next prime is 172164449. The reversal of 172164441 is 144461271.

It is not a de Polignac number, because 172164441 - 2² = 172164437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172164399 and 172164408.

It is not an unprimeable number, because it can be changed into a prime (172164449) 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 in 15 ways as a sum of consecutive naturals, for example, 2521 + ... + 18726.

It is an arithmetic number, because the mean of its divisors is an integer number (14937344).

Almost surely, 2^172164441 is an apocalyptic number.

It is an amenable number.

172164441 is a deficient number, since it is larger than the sum of its proper divisors (66833063).

172164441 is a wasteful number, since it uses less digits than its factorization.

172164441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21360.

The product of its digits is 5376, while the sum is 30.

The square root of 172164441 is about 13121.1448052371. The cubic root of 172164441 is about 556.3069499239.

The spelling of 172164441 in words is "one hundred seventy-two million, one hundred sixty-four thousand, four hundred forty-one".