172041100 has 72 divisors (see below), whose sum is σ = 465470208. Its totient is φ = 53620800.

The previous prime is 172041073. The next prime is 172041101. The reversal of 172041100 is 1140271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172041101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3472 + ... + 18871.

It is an arithmetic number, because the mean of its divisors is an integer number (6464864).

Almost surely, 2^172041100 is an apocalyptic number.

172041100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172041100 is an abundant number, since it is smaller than the sum of its proper divisors (293429108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172041100 is a wasteful number, since it uses less digits than its factorization.

172041100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22375 (or 22368 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 172041100 is about 13116.4438778199. The cubic root of 172041100 is about 556.1740695077.

Adding to 172041100 its reverse (1140271), we get a palindrome (173181371).

The spelling of 172041100 in words is "one hundred seventy-two million, forty-one thousand, one hundred".