50991584 has 48 divisors (see below), whose sum is σ = 115341408. Its totient is φ = 21737472.

The previous prime is 50991581. The next prime is 50991601. The reversal of 50991584 is 48519905.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50991581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51704 + ... + 52680.

It is an arithmetic number, because the mean of its divisors is an integer number (2402946).

Almost surely, 2^50991584 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 50991584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57670704).

50991584 is an abundant number, since it is smaller than the sum of its proper divisors (64349824).

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

50991584 is a wasteful number, since it uses less digits than its factorization.

50991584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 50991584 is about 7140.8391663725. The cubic root of 50991584 is about 370.8225770169.

The spelling of 50991584 in words is "fifty million, nine hundred ninety-one thousand, five hundred eighty-four".