50561784 has 96 divisors (see below), whose sum is σ = 168561120. Its totient is φ = 13333248.

The previous prime is 50561783. The next prime is 50561813. The reversal of 50561784 is 48716505.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50561783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2694 + ... + 10410.

It is an arithmetic number, because the mean of its divisors is an integer number (1755845).

Almost surely, 2^50561784 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 50561784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84280560).

50561784 is an abundant number, since it is smaller than the sum of its proper divisors (117999336).

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

50561784 is a wasteful number, since it uses less digits than its factorization.

50561784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7749 (or 7742 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 50561784 is about 7110.6809800468. The cubic root of 50561784 is about 369.7777676922. Note that the first 4 decimals are identical.

The spelling of 50561784 in words is "fifty million, five hundred sixty-one thousand, seven hundred eighty-four".