172543332 has 96 divisors (see below), whose sum is σ = 476421120. Its totient is φ = 48090240.

The previous prime is 172543307. The next prime is 172543333. The reversal of 172543332 is 233345271.

It is a self number, because there is not a number n which added to its sum of digits gives 172543332.

It is not an unprimeable number, because it can be changed into a prime (172543333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66907 + ... + 69437.

It is an arithmetic number, because the mean of its divisors is an integer number (4962720).

Almost surely, 2^172543332 is an apocalyptic number.

172543332 is a gapful number since it is divisible by the number (12) 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 172543332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238210560).

172543332 is an abundant number, since it is smaller than the sum of its proper divisors (303877788).

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

172543332 is a wasteful number, since it uses less digits than its factorization.

172543332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593 (or 2591 counting only the distinct ones).

The product of its digits is 15120, while the sum is 30.

The square root of 172543332 is about 13135.5750540279. The cubic root of 172543332 is about 556.7147485371.

The spelling of 172543332 in words is "one hundred seventy-two million, five hundred forty-three thousand, three hundred thirty-two".