4451522172 has 12 divisors (see below), whose sum is σ = 10386885096. Its totient is φ = 1483840720.

The previous prime is 4451522171. The next prime is 4451522183. The reversal of 4451522172 is 2712251544.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4451522171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185480079 + ... + 185480102.

It is an arithmetic number, because the mean of its divisors is an integer number (865573758).

Almost surely, 2^4451522172 is an apocalyptic number.

It is an amenable number.

4451522172 is an abundant number, since it is smaller than the sum of its proper divisors (5935362924).

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

4451522172 is a wasteful number, since it uses less digits than its factorization.

4451522172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370960188 (or 370960186 counting only the distinct ones).

The product of its digits is 22400, while the sum is 33.

The square root of 4451522172 is about 66719.7285066419. The cubic root of 4451522172 is about 1645.0136788680.

The spelling of 4451522172 in words is "four billion, four hundred fifty-one million, five hundred twenty-two thousand, one hundred seventy-two".