54991744 has 32 divisors (see below), whose sum is σ = 111365640. Its totient is φ = 27041280.

The previous prime is 54991723. The next prime is 54991747. The reversal of 54991744 is 44719945.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 54991744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54991747) 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 3 ways as a sum of consecutive naturals, for example, 4287 + ... + 11329.

Almost surely, 2^54991744 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 54991744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55682820).

54991744 is an abundant number, since it is smaller than the sum of its proper divisors (56373896).

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

54991744 is an equidigital number, since it uses as much as digits as its factorization.

54991744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7118 (or 7106 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 54991744 is about 7415.6418467992. The cubic root of 54991744 is about 380.2762165327.

The spelling of 54991744 in words is "fifty-four million, nine hundred ninety-one thousand, seven hundred forty-four".