52065666 has 48 divisors (see below), whose sum is σ = 117936000. Its totient is φ = 17214768.

The previous prime is 52065659. The next prime is 52065667. The reversal of 52065666 is 66656025.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 52065666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52065667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72055 + ... + 72773.

It is an arithmetic number, because the mean of its divisors is an integer number (2457000).

Almost surely, 2^52065666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52065666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58968000).

52065666 is an abundant number, since it is smaller than the sum of its proper divisors (65870334).

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

52065666 is a wasteful number, since it uses less digits than its factorization.

52065666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 52065666 is about 7215.6542322925. The cubic root of 52065666 is about 373.4081643862.

The spelling of 52065666 in words is "fifty-two million, sixty-five thousand, six hundred sixty-six".