52530640 has 40 divisors (see below), whose sum is σ = 122635008. Its totient is φ = 20926080.

The previous prime is 52530619. The next prime is 52530659. The reversal of 52530640 is 4603525.

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

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 20469 + ... + 22891.

Almost surely, 2^52530640 is an apocalyptic number.

It is an amenable number.

52530640 is an abundant number, since it is smaller than the sum of its proper divisors (70104368).

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

52530640 is a wasteful number, since it uses less digits than its factorization.

52530640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707 (or 2701 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 52530640 is about 7247.8024255632. The cubic root of 52530640 is about 374.5164493373.

The spelling of 52530640 in words is "fifty-two million, five hundred thirty thousand, six hundred forty".