52216320 has 160 divisors (see below), whose sum is σ = 180113472. Its totient is φ = 12828672.

The previous prime is 52216309. The next prime is 52216331. The reversal of 52216320 is 2361225.

It is an interprime number because it is at equal distance from previous prime (52216309) and next prime (52216331).

It is a tau number, because it is divible by the number of its divisors (160).

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, 99579 + ... + 100101.

Almost surely, 2^52216320 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 52216320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90056736).

52216320 is an abundant number, since it is smaller than the sum of its proper divisors (127897152).

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

52216320 is a wasteful number, since it uses less digits than its factorization.

52216320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 52216320 is about 7226.0860775388. The cubic root of 52216320 is about 373.7679745124.

Adding to 52216320 its reverse (2361225), we get a palindrome (54577545).

The spelling of 52216320 in words is "fifty-two million, two hundred sixteen thousand, three hundred twenty".