172475505 has 24 divisors (see below), whose sum is σ = 311957568. Its totient is φ = 87986976.

The previous prime is 172475497. The next prime is 172475533. The reversal of 172475505 is 505574271.

It is not a de Polignac number, because 172475505 - 2³ = 172475497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172475505.

It is an unprimeable number.

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, 82287 + ... + 84356.

It is an arithmetic number, because the mean of its divisors is an integer number (12998232).

Almost surely, 2^172475505 is an apocalyptic number.

172475505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172475505 is a deficient number, since it is larger than the sum of its proper divisors (139482063).

172475505 is a wasteful number, since it uses less digits than its factorization.

172475505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166677 (or 166674 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 36.

The square root of 172475505 is about 13132.9929947442. The cubic root of 172475505 is about 556.6417905545.

The spelling of 172475505 in words is "one hundred seventy-two million, four hundred seventy-five thousand, five hundred five".