52513320 has 64 divisors (see below), whose sum is σ = 161219520. Its totient is φ = 13676544.

The previous prime is 52513313. The next prime is 52513337. The reversal of 52513320 is 2331525.

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, 72 + ... + 10248.

It is an arithmetic number, because the mean of its divisors is an integer number (2519055).

Almost surely, 2^52513320 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 52513320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80609760).

52513320 is an abundant number, since it is smaller than the sum of its proper divisors (108706200).

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

52513320 is a wasteful number, since it uses less digits than its factorization.

52513320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10234 (or 10230 counting only the distinct ones).

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

The square root of 52513320 is about 7246.6074821257. The cubic root of 52513320 is about 374.4752839150.

Adding to 52513320 its reverse (2331525), we get a palindrome (54844845).

The spelling of 52513320 in words is "fifty-two million, five hundred thirteen thousand, three hundred twenty".