50581440 has 336 divisors, whose sum is σ = 215237568. Its totient is φ = 10616832.

The previous prime is 50581417. The next prime is 50581441. The reversal of 50581440 is 4418505.

It is a tau number, because it is divible by the number of its divisors (336).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50581441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 261984 + ... + 262176.

It is an arithmetic number, because the mean of its divisors is an integer number (640588).

Almost surely, 2^50581440 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 50581440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107618784).

50581440 is an abundant number, since it is smaller than the sum of its proper divisors (164656128).

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

50581440 is a wasteful number, since it uses less digits than its factorization.

50581440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 50581440 is about 7112.0629918470. The cubic root of 50581440 is about 369.8256787795.

Adding to 50581440 its reverse (4418505), we get a palindrome (54999945).

The spelling of 50581440 in words is "fifty million, five hundred eighty-one thousand, four hundred forty".