172505232 has 30 divisors (see below), whose sum is σ = 482775462. Its totient is φ = 57501696.

The previous prime is 172505231. The next prime is 172505251. The reversal of 172505232 is 232505271.

It can be written as a sum of positive squares in only one way, i.e., 170145936 + 2359296 = 13044^2 + 1536^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172505196 and 172505205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172505231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 598833 + ... + 599120.

Almost surely, 2^172505232 is an apocalyptic number.

172505232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172505232 is an abundant number, since it is smaller than the sum of its proper divisors (310270230).

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

172505232 is a wasteful number, since it uses less digits than its factorization.

172505232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197967 (or 1197958 counting only the distinct ones).

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

The square root of 172505232 is about 13134.1247138894. The cubic root of 172505232 is about 556.6737686992.

The spelling of 172505232 in words is "one hundred seventy-two million, five hundred five thousand, two hundred thirty-two".