53005405530 has 256 divisors, whose sum is σ = 162321408000. Its totient is φ = 10981393920.

The previous prime is 53005405511. The next prime is 53005405547. The reversal of 53005405530 is 3550450035.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 64404699 + ... + 64405521.

It is an arithmetic number, because the mean of its divisors is an integer number (634068000).

Almost surely, 2^53005405530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53005405530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81160704000).

53005405530 is an abundant number, since it is smaller than the sum of its proper divisors (109316002470).

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

53005405530 is a wasteful number, since it uses less digits than its factorization.

53005405530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 30.

Adding to 53005405530 its reverse (3550450035), we get a palindrome (56555855565).

The spelling of 53005405530 in words is "fifty-three billion, five million, four hundred five thousand, five hundred thirty".