50515820 has 48 divisors (see below), whose sum is σ = 111464640. Its totient is φ = 19193856.

The previous prime is 50515811. The next prime is 50515831. The reversal of 50515820 is 2851505.

50515820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 50515820.

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, 88496 + ... + 89064.

It is an arithmetic number, because the mean of its divisors is an integer number (2322180).

Almost surely, 2^50515820 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 50515820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55732320).

50515820 is an abundant number, since it is smaller than the sum of its proper divisors (60948820).

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

50515820 is a wasteful number, since it uses less digits than its factorization.

50515820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 50515820 is about 7107.4482059316. The cubic root of 50515820 is about 369.6656829194.

The spelling of 50515820 in words is "fifty million, five hundred fifteen thousand, eight hundred twenty".