51080784 has 80 divisors (see below), whose sum is σ = 142223040. Its totient is φ = 15738880.

The previous prime is 51080761. The next prime is 51080789. The reversal of 51080784 is 48708015.

It is a happy number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51080789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47614 + ... + 48674.

It is an arithmetic number, because the mean of its divisors is an integer number (1777788).

Almost surely, 2^51080784 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 51080784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71111520).

51080784 is an abundant number, since it is smaller than the sum of its proper divisors (91142256).

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

51080784 is a wasteful number, since it uses less digits than its factorization.

51080784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 51080784 is about 7147.0822018499. The cubic root of 51080784 is about 371.0386787242.

Adding to 51080784 its reverse (48708015), we get a palindrome (99788799).

The spelling of 51080784 in words is "fifty-one million, eighty thousand, seven hundred eighty-four".