51508680 has 64 divisors (see below), whose sum is σ = 155096640. Its totient is φ = 13684992.

The previous prime is 51508679. The next prime is 51508703. The reversal of 51508680 is 8680515.

51508680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41022 + ... + 42258.

It is an arithmetic number, because the mean of its divisors is an integer number (2423385).

Almost surely, 2^51508680 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 51508680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77548320).

51508680 is an abundant number, since it is smaller than the sum of its proper divisors (103587960).

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

51508680 is a wasteful number, since it uses less digits than its factorization.

51508680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 51508680 is about 7176.9547859799. The cubic root of 51508680 is about 372.0718441422.

The spelling of 51508680 in words is "fifty-one million, five hundred eight thousand, six hundred eighty".