51152320 has 56 divisors (see below), whose sum is σ = 128985264. Its totient is φ = 19255296.

The previous prime is 51152291. The next prime is 51152323. The reversal of 51152320 is 2325115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51152323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739 + ... + 10141.

Almost surely, 2^51152320 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 51152320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64492632).

51152320 is an abundant number, since it is smaller than the sum of its proper divisors (77832944).

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

51152320 is a wasteful number, since it uses less digits than its factorization.

51152320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9437 (or 9427 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51152320 is about 7152.0850106805. The cubic root of 51152320 is about 371.2118047673.

Adding to 51152320 its reverse (2325115), we get a palindrome (53477435).

The spelling of 51152320 in words is "fifty-one million, one hundred fifty-two thousand, three hundred twenty".