172173443 has 8 divisors (see below), whose sum is σ = 185919888. Its totient is φ = 158498784.

The previous prime is 172173439. The next prime is 172173481. The reversal of 172173443 is 344371271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172173443 - 2² = 172173439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172173403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12905 + ... + 22602.

It is an arithmetic number, because the mean of its divisors is an integer number (23239986).

Almost surely, 2^172173443 is an apocalyptic number.

172173443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

172173443 is a deficient number, since it is larger than the sum of its proper divisors (13746445).

172173443 is a wasteful number, since it uses less digits than its factorization.

172173443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35893.

The product of its digits is 14112, while the sum is 32.

The square root of 172173443 is about 13121.4878348456. The cubic root of 172173443 is about 556.3166456695.

The spelling of 172173443 in words is "one hundred seventy-two million, one hundred seventy-three thousand, four hundred forty-three".