52008640 has 28 divisors (see below), whose sum is σ = 123846336. Its totient is φ = 20803328.

The previous prime is 52008613. The next prime is 52008673. The reversal of 52008640 is 4680025.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 80944 + ... + 81583.

Almost surely, 2^52008640 is an apocalyptic number.

It is an amenable number.

52008640 is an abundant number, since it is smaller than the sum of its proper divisors (71837696).

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

52008640 is a wasteful number, since it uses less digits than its factorization.

52008640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162544 (or 162534 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 52008640 is about 7211.7016022573. The cubic root of 52008640 is about 373.2717869064.

Adding to 52008640 its reverse (4680025), we get a palindrome (56688665).

The spelling of 52008640 in words is "fifty-two million, eight thousand, six hundred forty".