52855686 has 128 divisors (see below), whose sum is σ = 138378240. Its totient is φ = 14805504.

The previous prime is 52855639. The next prime is 52855687. The reversal of 52855686 is 68655825.

52855686 is a `hidden beast` number, since 5 + 2 + 85 + 568 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52855687) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 513111 + ... + 513213.

It is an arithmetic number, because the mean of its divisors is an integer number (1081080).

Almost surely, 2^52855686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52855686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69189120).

52855686 is an abundant number, since it is smaller than the sum of its proper divisors (85522554).

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

52855686 is a wasteful number, since it uses less digits than its factorization.

52855686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 181 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 52855686 is about 7270.1916068285. The cubic root of 52855686 is about 375.2873317850.

The spelling of 52855686 in words is "fifty-two million, eight hundred fifty-five thousand, six hundred eighty-six".