53044640 has 48 divisors (see below), whose sum is σ = 136715040. Its totient is φ = 19288320.

The previous prime is 53044633. The next prime is 53044661. The reversal of 53044640 is 4644035.

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, 13310 + ... + 16829.

It is an arithmetic number, because the mean of its divisors is an integer number (2848230).

Almost surely, 2^53044640 is an apocalyptic number.

It is an amenable number.

53044640 is an abundant number, since it is smaller than the sum of its proper divisors (83670400).

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

53044640 is a wasteful number, since it uses less digits than its factorization.

53044640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30165 (or 30157 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 53044640 is about 7283.1751317677. The cubic root of 53044640 is about 375.7340053221.

Adding to 53044640 its reverse (4644035), we get a palindrome (57688675).

The spelling of 53044640 in words is "fifty-three million, forty-four thousand, six hundred forty".