52681540 has 24 divisors (see below), whose sum is σ = 110964672. Its totient is φ = 21009120.

The previous prime is 52681537. The next prime is 52681549. The reversal of 52681540 is 4518625.

52681540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (52681549) 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 7 ways as a sum of consecutive naturals, for example, 3145 + ... + 10735.

It is an arithmetic number, because the mean of its divisors is an integer number (4623528).

Almost surely, 2^52681540 is an apocalyptic number.

It is an amenable number.

52681540 is an abundant number, since it is smaller than the sum of its proper divisors (58283132).

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

52681540 is a wasteful number, since it uses less digits than its factorization.

52681540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7947 (or 7945 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 52681540 is about 7258.2050122603. The cubic root of 52681540 is about 374.8747196324.

The spelling of 52681540 in words is "fifty-two million, six hundred eighty-one thousand, five hundred forty".