52243686 has 108 divisors (see below), whose sum is σ = 133762356. Its totient is φ = 14720640.

The previous prime is 52243679. The next prime is 52243687. The reversal of 52243686 is 68634225.

It is a self number, because there is not a number n which added to its sum of digits gives 52243686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52243687) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 629401 + ... + 629483.

Almost surely, 2^52243686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52243686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66881178).

52243686 is an abundant number, since it is smaller than the sum of its proper divisors (81518670).

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

52243686 is a wasteful number, since it uses less digits than its factorization.

52243686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 116 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 52243686 is about 7227.9793856928. The cubic root of 52243686 is about 373.8332590060.

The spelling of 52243686 in words is "fifty-two million, two hundred forty-three thousand, six hundred eighty-six".