52543644 has 24 divisors (see below), whose sum is σ = 123690000. Its totient is φ = 17359104.

The previous prime is 52543637. The next prime is 52543649. The reversal of 52543644 is 44634525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52543649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18019 + ... + 20730.

It is an arithmetic number, because the mean of its divisors is an integer number (5153750).

Almost surely, 2^52543644 is an apocalyptic number.

It is an amenable number.

52543644 is an abundant number, since it is smaller than the sum of its proper divisors (71146356).

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

52543644 is a wasteful number, since it uses less digits than its factorization.

52543644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38869 (or 38867 counting only the distinct ones).

The product of its digits is 57600, while the sum is 33.

The square root of 52543644 is about 7248.6994695600. The cubic root of 52543644 is about 374.5473507318.

The spelling of 52543644 in words is "fifty-two million, five hundred forty-three thousand, six hundred forty-four".