51296320 has 56 divisors (see below), whose sum is σ = 126114048. Its totient is φ = 19852800.

The previous prime is 51296281. The next prime is 51296341. The reversal of 51296320 is 2369215.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7335 + ... + 12505.

Almost surely, 2^51296320 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 51296320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63057024).

51296320 is an abundant number, since it is smaller than the sum of its proper divisors (74817728).

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

51296320 is a wasteful number, since it uses less digits than its factorization.

51296320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219 (or 5209 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 51296320 is about 7162.1449301170. The cubic root of 51296320 is about 371.5598138630.

It can be divided in two parts, 5129 and 6320, that added together give a square (11449 = 107²).

The spelling of 51296320 in words is "fifty-one million, two hundred ninety-six thousand, three hundred twenty".