52165530 has 96 divisors (see below), whose sum is σ = 141680448. Its totient is φ = 13305600.

The previous prime is 52165511. The next prime is 52165543. The reversal of 52165530 is 3556125.

52165530 is a `hidden beast` number, since 5 + 2 + 1 + 655 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 52165494 and 52165503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 247125 + ... + 247335.

It is an arithmetic number, because the mean of its divisors is an integer number (1475838).

Almost surely, 2^52165530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52165530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70840224).

52165530 is an abundant number, since it is smaller than the sum of its proper divisors (89514918).

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

52165530 is a wasteful number, since it uses less digits than its factorization.

52165530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 52165530 is about 7222.5708719264. The cubic root of 52165530 is about 373.6467491063.

The spelling of 52165530 in words is "fifty-two million, one hundred sixty-five thousand, five hundred thirty".