53630440 has 16 divisors (see below), whose sum is σ = 120668580. Its totient is φ = 21452160.

The previous prime is 53630429. The next prime is 53630441. The reversal of 53630440 is 4403635.

53630440 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 2 ways, for example, as 53085796 + 544644 = 7286^2 + 738^2 .

It is not an unprimeable number, because it can be changed into a prime (53630441) 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 3 ways as a sum of consecutive naturals, for example, 670341 + ... + 670420.

Almost surely, 2^53630440 is an apocalyptic number.

It is an amenable number.

53630440 is an abundant number, since it is smaller than the sum of its proper divisors (67038140).

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

53630440 is a wasteful number, since it uses less digits than its factorization.

53630440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340772 (or 1340768 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 53630440 is about 7323.2806855944. The cubic root of 53630440 is about 377.1120878194.

It can be divided in two parts, 536 and 30440, that added together give a square (30976 = 176²).

The spelling of 53630440 in words is "fifty-three million, six hundred thirty thousand, four hundred forty".