172523052 has 72 divisors (see below), whose sum is σ = 480624144. Its totient is φ = 51843456.

The previous prime is 172523051. The next prime is 172523081. The reversal of 172523052 is 250325271.

It is not an unprimeable number, because it can be changed into a prime (172523051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15838 + ... + 24410.

Almost surely, 2^172523052 is an apocalyptic number.

172523052 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 172523052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240312072).

172523052 is an abundant number, since it is smaller than the sum of its proper divisors (308101092).

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

172523052 is a wasteful number, since it uses less digits than its factorization.

172523052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8639 (or 8634 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 172523052 is about 13134.8030818890. The cubic root of 172523052 is about 556.6929363980.

The spelling of 172523052 in words is "one hundred seventy-two million, five hundred twenty-three thousand, fifty-two".