53518040 has 64 divisors (see below), whose sum is σ = 128446560. Its totient is φ = 19998720.

The previous prime is 53518039. The next prime is 53518061. The reversal of 53518040 is 4081535.

53518040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 143294 + ... + 143666.

Almost surely, 2^53518040 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 53518040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64223280).

53518040 is an abundant number, since it is smaller than the sum of its proper divisors (74928520).

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

53518040 is a wasteful number, since it uses less digits than its factorization.

53518040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 53518040 is about 7315.6025042371. The cubic root of 53518040 is about 376.8484499465.

Adding to 53518040 its reverse (4081535), we get a palindrome (57599575).

The spelling of 53518040 in words is "fifty-three million, five hundred eighteen thousand, forty".