53115240 has 64 divisors (see below), whose sum is σ = 164851200. Its totient is φ = 13674752.

The previous prime is 53115233. The next prime is 53115247. The reversal of 53115240 is 4251135.

53115240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (53115233) and next prime (53115247).

It is not an unprimeable number, because it can be changed into a prime (53115247) 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 15 ways as a sum of consecutive naturals, for example, 4152 + ... + 11111.

It is an arithmetic number, because the mean of its divisors is an integer number (2575800).

Almost surely, 2^53115240 is an apocalyptic number.

It is an amenable number.

53115240 is an abundant number, since it is smaller than the sum of its proper divisors (111735960).

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

53115240 is a wasteful number, since it uses less digits than its factorization.

53115240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15306 (or 15302 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 53115240 is about 7288.0203073263. The cubic root of 53115240 is about 375.9006263719.

Adding to 53115240 its reverse (4251135), we get a palindrome (57366375).

The spelling of 53115240 in words is "fifty-three million, one hundred fifteen thousand, two hundred forty".