52545520 has 20 divisors (see below), whose sum is σ = 122168520. Its totient is φ = 21018176.

The previous prime is 52545509. The next prime is 52545523. The reversal of 52545520 is 2554525.

52545520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×52545520² = 5522063344140800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52545523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328330 + ... + 328489.

It is an arithmetic number, because the mean of its divisors is an integer number (6108426).

Almost surely, 2^52545520 is an apocalyptic number.

It is an amenable number.

52545520 is an abundant number, since it is smaller than the sum of its proper divisors (69623000).

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

52545520 is a wasteful number, since it uses less digits than its factorization.

52545520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656832 (or 656826 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 52545520 is about 7248.8288709280. The cubic root of 52545520 is about 374.5518082482.

The spelling of 52545520 in words is "fifty-two million, five hundred forty-five thousand, five hundred twenty".