51016080 has 80 divisors (see below), whose sum is σ = 163275264. Its totient is φ = 13163520.

The previous prime is 51016079. The next prime is 51016087. The reversal of 51016080 is 8061015.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (51016087) 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, 4012 + ... + 10868.

Almost surely, 2^51016080 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 51016080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81637632).

51016080 is an abundant number, since it is smaller than the sum of its proper divisors (112259184).

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

51016080 is a wasteful number, since it uses less digits than its factorization.

51016080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6904 (or 6898 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 51016080 is about 7142.5541650029. The cubic root of 51016080 is about 370.8819477009.

Adding to 51016080 its reverse (8061015), we get a palindrome (59077095).

The spelling of 51016080 in words is "fifty-one million, sixteen thousand, eighty".