53315304240 has 160 divisors (see below), whose sum is σ = 180970417152. Its totient is φ = 12877056000.

The previous prime is 53315304227. The next prime is 53315304247. The reversal of 53315304240 is 4240351335.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 53315304198 and 53315304207.

It is not an unprimeable number, because it can be changed into a prime (53315304247) 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, 678180 + ... + 752700.

Almost surely, 2^53315304240 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 53315304240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90485208576).

53315304240 is an abundant number, since it is smaller than the sum of its proper divisors (127655112912).

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

53315304240 is a wasteful number, since it uses less digits than its factorization.

53315304240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74819 (or 74813 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 53315304240 its reverse (4240351335), we get a palindrome (57555655575).

The spelling of 53315304240 in words is "fifty-three billion, three hundred fifteen million, three hundred four thousand, two hundred forty".