52565328 has 80 divisors (see below), whose sum is σ = 151776000. Its totient is φ = 17418240.

The previous prime is 52565297. The next prime is 52565339. The reversal of 52565328 is 82356525.

It is a happy number.

It is a super-2 number, since 2×52565328² = 5526227415495168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52565292 and 52565301.

It is a congruent number.

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, 116848 + ... + 117296.

It is an arithmetic number, because the mean of its divisors is an integer number (1897200).

Almost surely, 2^52565328 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 52565328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75888000).

52565328 is an abundant number, since it is smaller than the sum of its proper divisors (99210672).

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

52565328 is a wasteful number, since it uses less digits than its factorization.

52565328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 725 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 52565328 is about 7250.1950318595. The cubic root of 52565328 is about 374.5988670660.

The spelling of 52565328 in words is "fifty-two million, five hundred sixty-five thousand, three hundred twenty-eight".