52191328 has 48 divisors (see below), whose sum is σ = 123621120. Its totient is φ = 21188736.

The previous prime is 52191287. The next prime is 52191331. The reversal of 52191328 is 82319125.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 52191328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1876 + ... + 10387.

It is an arithmetic number, because the mean of its divisors is an integer number (2575440).

Almost surely, 2^52191328 is an apocalyptic number.

It is an amenable number.

52191328 is an abundant number, since it is smaller than the sum of its proper divisors (71429792).

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

52191328 is a wasteful number, since it uses less digits than its factorization.

52191328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12299 (or 12291 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 52191328 is about 7224.3565803468. The cubic root of 52191328 is about 373.7083335169.

The spelling of 52191328 in words is "fifty-two million, one hundred ninety-one thousand, three hundred twenty-eight".