172173411 has 16 divisors (see below), whose sum is σ = 263301120. Its totient is φ = 111079080.

The previous prime is 172173409. The next prime is 172173439. The reversal of 172173411 is 114371271.

It is not a de Polignac number, because 172173411 - 2¹ = 172173409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (172173481) 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, 102015 + ... + 103688.

It is an arithmetic number, because the mean of its divisors is an integer number (16456320).

Almost surely, 2^172173411 is an apocalyptic number.

172173411 is a deficient number, since it is larger than the sum of its proper divisors (91127709).

172173411 is a wasteful number, since it uses less digits than its factorization.

172173411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205743 (or 205737 counting only the distinct ones).

The product of its digits is 1176, while the sum is 27.

The square root of 172173411 is about 13121.4866154716. The cubic root of 172173411 is about 556.3166112040.

The spelling of 172173411 in words is "one hundred seventy-two million, one hundred seventy-three thousand, four hundred eleven".