52855728 has 40 divisors (see below), whose sum is σ = 138199488. Its totient is φ = 17404992.

The previous prime is 52855717. The next prime is 52855741. The reversal of 52855728 is 82755825.

It is a self number, because there is not a number n which added to its sum of digits gives 52855728.

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, 2650 + ... + 10617.

Almost surely, 2^52855728 is an apocalyptic number.

It is an amenable number.

52855728 is an abundant number, since it is smaller than the sum of its proper divisors (85343760).

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

52855728 is a wasteful number, since it uses less digits than its factorization.

52855728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13361 (or 13355 counting only the distinct ones).

The product of its digits is 224000, while the sum is 42.

The square root of 52855728 is about 7270.1944953350. The cubic root of 52855728 is about 375.2874311881.

The spelling of 52855728 in words is "fifty-two million, eight hundred fifty-five thousand, seven hundred twenty-eight".