52543520 has 24 divisors (see below), whose sum is σ = 124134444. Its totient is φ = 21017344.

The previous prime is 52543499. The next prime is 52543537. The reversal of 52543520 is 2534525.

It can be written as a sum of positive squares in 2 ways, for example, as 51093904 + 1449616 = 7148^2 + 1204^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52543520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164039 + ... + 164358.

Almost surely, 2^52543520 is an apocalyptic number.

It is an amenable number.

52543520 is an abundant number, since it is smaller than the sum of its proper divisors (71590924).

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

52543520 is a wasteful number, since it uses less digits than its factorization.

52543520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328412 (or 328404 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 52543520 is about 7248.6909162965. The cubic root of 52543520 is about 374.5470560947.

The spelling of 52543520 in words is "fifty-two million, five hundred forty-three thousand, five hundred twenty".