53320512 has 112 divisors (see below), whose sum is σ = 163291520. Its totient is φ = 15040512.

The previous prime is 53320507. The next prime is 53320529. The reversal of 53320512 is 21502335.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 130164 + ... + 130572.

It is an arithmetic number, because the mean of its divisors is an integer number (1457960).

Almost surely, 2^53320512 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 53320512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81645760).

53320512 is an abundant number, since it is smaller than the sum of its proper divisors (109971008).

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

53320512 is a wasteful number, since it uses less digits than its factorization.

53320512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 53320512 is about 7302.0895639536. The cubic root of 53320512 is about 376.3842457935.

Adding to 53320512 its reverse (21502335), we get a palindrome (74822847).

The spelling of 53320512 in words is "fifty-three million, three hundred twenty thousand, five hundred twelve".