52637540 has 24 divisors (see below), whose sum is σ = 110701752. Its totient is φ = 21024000.

The previous prime is 52637539. The next prime is 52637549. The reversal of 52637540 is 4573625.

52637540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13424896 + 39212644 = 3664^2 + 6262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 52637497 and 52637506.

It is not an unprimeable number, because it can be changed into a prime (52637549) 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, 16040 + ... + 19040.

It is an arithmetic number, because the mean of its divisors is an integer number (4612573).

Almost surely, 2^52637540 is an apocalyptic number.

It is an amenable number.

52637540 is an abundant number, since it is smaller than the sum of its proper divisors (58064212).

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

52637540 is a wasteful number, since it uses less digits than its factorization.

52637540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3887 (or 3885 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 52637540 is about 7255.1733266684. The cubic root of 52637540 is about 374.7703245451.

The spelling of 52637540 in words is "fifty-two million, six hundred thirty-seven thousand, five hundred forty".