53118240 has 96 divisors (see below), whose sum is σ = 191237760. Its totient is φ = 12140544.

The previous prime is 53118239. The next prime is 53118253. The reversal of 53118240 is 4281135.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 53118240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4545 + ... + 11264.

It is an arithmetic number, because the mean of its divisors is an integer number (1992060).

Almost surely, 2^53118240 is an apocalyptic number.

It is an amenable number.

53118240 is an abundant number, since it is smaller than the sum of its proper divisors (138119520).

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

53118240 is a wasteful number, since it uses less digits than its factorization.

53118240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15834 (or 15826 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 53118240 is about 7288.2261216293. The cubic root of 53118240 is about 375.9077033153.

Adding to 53118240 its reverse (4281135), we get a palindrome (57399375).

The spelling of 53118240 in words is "fifty-three million, one hundred eighteen thousand, two hundred forty".