172675520 has 56 divisors (see below), whose sum is σ = 415497264. Its totient is φ = 68345856.

The previous prime is 172675507. The next prime is 172675523. The reversal of 172675520 is 25576271.

It is a happy number.

172675520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172675523) 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 7 ways as a sum of consecutive naturals, for example, 28259 + ... + 33821.

It is an arithmetic number, because the mean of its divisors is an integer number (7419594).

Almost surely, 2^172675520 is an apocalyptic number.

172675520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172675520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207748632).

172675520 is an abundant number, since it is smaller than the sum of its proper divisors (242821744).

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

172675520 is an equidigital number, since it uses as much as digits as its factorization.

172675520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5677 (or 5667 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 172675520 is about 13140.6057699027. The cubic root of 172675520 is about 556.8568813823.

The spelling of 172675520 in words is "one hundred seventy-two million, six hundred seventy-five thousand, five hundred twenty".