52540720 has 40 divisors (see below), whose sum is σ = 122469840. Its totient is φ = 20962560.

The previous prime is 52540699. The next prime is 52540723. The reversal of 52540720 is 2704525.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (52540723) 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 7 ways as a sum of consecutive naturals, for example, 48990 + ... + 50050.

It is an arithmetic number, because the mean of its divisors is an integer number (3061746).

Almost surely, 2^52540720 is an apocalyptic number.

It is an amenable number.

52540720 is an abundant number, since it is smaller than the sum of its proper divisors (69929120).

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

52540720 is a wasteful number, since it uses less digits than its factorization.

52540720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693 (or 1687 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 52540720 is about 7248.4977754015. The cubic root of 52540720 is about 374.5404028773.

The spelling of 52540720 in words is "fifty-two million, five hundred forty thousand, seven hundred twenty".