53015040 has 320 divisors, whose sum is σ = 206236800. Its totient is φ = 12828672.

The previous prime is 53015029. The next prime is 53015041. The reversal of 53015040 is 4051035.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53015041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 898531 + ... + 898589.

It is an arithmetic number, because the mean of its divisors is an integer number (644490).

Almost surely, 2^53015040 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 53015040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103118400).

53015040 is an abundant number, since it is smaller than the sum of its proper divisors (153221760).

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

53015040 is a wasteful number, since it uses less digits than its factorization.

53015040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 53015040 is about 7281.1427674507. The cubic root of 53015040 is about 375.6641032175.

Adding to 53015040 its reverse (4051035), we get a palindrome (57066075).

The spelling of 53015040 in words is "fifty-three million, fifteen thousand, forty".