75972172 has 6 divisors (see below), whose sum is σ = 132951308. Its totient is φ = 37986084.

The previous prime is 75972157. The next prime is 75972179. The reversal of 75972172 is 27127957.

It is a happy number.

75972172 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

75972172 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (75972179) 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 as a sum of consecutive naturals, namely, 9496518 + ... + 9496525.

Almost surely, 2^75972172 is an apocalyptic number.

It is an amenable number.

75972172 is a deficient number, since it is larger than the sum of its proper divisors (56979136).

75972172 is a wasteful number, since it uses less digits than its factorization.

75972172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18993047 (or 18993045 counting only the distinct ones).

The product of its digits is 61740, while the sum is 40.

The square root of 75972172 is about 8716.2016956929. The cubic root of 75972172 is about 423.5306527726.

The spelling of 75972172 in words is "seventy-five million, nine hundred seventy-two thousand, one hundred seventy-two".