52206660 has 288 divisors, whose sum is σ = 193052160. Its totient is φ = 11658240.

The previous prime is 52206659. The next prime is 52206673. The reversal of 52206660 is 6660225.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 95 ways as a sum of consecutive naturals, for example, 1110757 + ... + 1110803.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^52206660 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 52206660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96526080).

52206660 is an abundant number, since it is smaller than the sum of its proper divisors (140845500).

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

52206660 is a wasteful number, since it uses less digits than its factorization.

52206660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 52206660 is about 7225.4176349883. The cubic root of 52206660 is about 373.7449241116.

Adding to 52206660 its reverse (6660225), we get a palindrome (58866885).

The spelling of 52206660 in words is "fifty-two million, two hundred six thousand, six hundred sixty".