172472165 has 8 divisors (see below), whose sum is σ = 207095928. Its totient is φ = 137891520.

The previous prime is 172472149. The next prime is 172472171. The reversal of 172472165 is 561274271.

It can be written as a sum of positive squares in 4 ways, for example, as 28879876 + 143592289 = 5374^2 + 11983^2 .

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

It is not a de Polignac number, because 172472165 - 2⁴ = 172472149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1202 + ... + 18611.

It is an arithmetic number, because the mean of its divisors is an integer number (25886991).

Almost surely, 2^172472165 is an apocalyptic number.

It is an amenable number.

172472165 is a deficient number, since it is larger than the sum of its proper divisors (34623763).

172472165 is a wasteful number, since it uses less digits than its factorization.

172472165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21559.

The product of its digits is 23520, while the sum is 35.

The square root of 172472165 is about 13132.8658334729. The cubic root of 172472165 is about 556.6381973958.

The spelling of 172472165 in words is "one hundred seventy-two million, four hundred seventy-two thousand, one hundred sixty-five".