50781856 has 48 divisors (see below), whose sum is σ = 106555176. Its totient is φ = 23740416.

The previous prime is 50781847. The next prime is 50781893. The reversal of 50781856 is 65818705.

It can be written as a sum of positive squares in 4 ways, for example, as 37210000 + 13571856 = 6100^2 + 3684^2 .

It is an alternating number because its digits alternate between odd and even.

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, 150520 + ... + 150856.

Almost surely, 2^50781856 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 50781856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53277588).

50781856 is an abundant number, since it is smaller than the sum of its proper divisors (55773320).

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

50781856 is a wasteful number, since it uses less digits than its factorization.

50781856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 50781856 is about 7126.1389265155. The cubic root of 50781856 is about 370.3134815893.

The spelling of 50781856 in words is "fifty million, seven hundred eighty-one thousand, eight hundred fifty-six".