75172120 has 32 divisors (see below), whose sum is σ = 170644320. Its totient is φ = 29800960.

The previous prime is 75172109. The next prime is 75172183. The reversal of 75172120 is 2127157.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3796 + ... + 12835.

It is an arithmetic number, because the mean of its divisors is an integer number (5332635).

Almost surely, 2^75172120 is an apocalyptic number.

It is an amenable number.

75172120 is an abundant number, since it is smaller than the sum of its proper divisors (95472200).

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

75172120 is a wasteful number, since it uses less digits than its factorization.

75172120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16755 (or 16751 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 75172120 is about 8670.1856958199. The cubic root of 75172120 is about 422.0386898034.

Adding to 75172120 its reverse (2127157), we get a palindrome (77299277).

The spelling of 75172120 in words is "seventy-five million, one hundred seventy-two thousand, one hundred twenty".