52504640 has 56 divisors (see below), whose sum is σ = 127723392. Its totient is φ = 20549120.

The previous prime is 52504603. The next prime is 52504643. The reversal of 52504640 is 4640525.

It is not an unprimeable number, because it can be changed into a prime (52504643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13295 + ... + 16785.

Almost surely, 2^52504640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52504640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63861696).

52504640 is an abundant number, since it is smaller than the sum of its proper divisors (75218752).

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

52504640 is a wasteful number, since it uses less digits than its factorization.

52504640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3555 (or 3545 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 52504640 is about 7246.0085564399. The cubic root of 52504640 is about 374.4546502639.

The spelling of 52504640 in words is "fifty-two million, five hundred four thousand, six hundred forty".