172942575 has 48 divisors (see below), whose sum is σ = 311542560. Its totient is φ = 84142080.

The previous prime is 172942571. The next prime is 172942591. The reversal of 172942575 is 575249271.

It is not a de Polignac number, because 172942575 - 2² = 172942571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172942571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85779 + ... + 87771.

It is an arithmetic number, because the mean of its divisors is an integer number (6490470).

Almost surely, 2^172942575 is an apocalyptic number.

172942575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172942575 is a deficient number, since it is larger than the sum of its proper divisors (138599985).

172942575 is a wasteful number, since it uses less digits than its factorization.

172942575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108 (or 2103 counting only the distinct ones).

The product of its digits is 176400, while the sum is 42.

The square root of 172942575 is about 13150.7632858325. The cubic root of 172942575 is about 557.1438064697.

The spelling of 172942575 in words is "one hundred seventy-two million, nine hundred forty-two thousand, five hundred seventy-five".