53171328 has 128 divisors (see below), whose sum is σ = 163722240. Its totient is φ = 14976000.

The previous prime is 53171311. The next prime is 53171333. The reversal of 53171328 is 82317135.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 53171295 and 53171304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352053 + ... + 352203.

It is an arithmetic number, because the mean of its divisors is an integer number (1279080).

Almost surely, 2^53171328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53171328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81861120).

53171328 is an abundant number, since it is smaller than the sum of its proper divisors (110550912).

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

53171328 is a wasteful number, since it uses less digits than its factorization.

53171328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 294 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 53171328 is about 7291.8672505744. The cubic root of 53171328 is about 376.0328928520.

The spelling of 53171328 in words is "fifty-three million, one hundred seventy-one thousand, three hundred twenty-eight".