54284721 has 8 divisors (see below), whose sum is σ = 72414240. Its totient is φ = 36172512.

The previous prime is 54284719. The next prime is 54284731. The reversal of 54284721 is 12748245.

54284721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54284721 - 2¹ = 54284719 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (54284731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8061 + ... + 13173.

It is an arithmetic number, because the mean of its divisors is an integer number (9051780).

Almost surely, 2^54284721 is an apocalyptic number.

It is an amenable number.

54284721 is a deficient number, since it is larger than the sum of its proper divisors (18129519).

54284721 is a wasteful number, since it uses less digits than its factorization.

54284721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8655.

The product of its digits is 17920, while the sum is 33.

The square root of 54284721 is about 7367.8165693779. The cubic root of 54284721 is about 378.6394582044.

The spelling of 54284721 in words is "fifty-four million, two hundred eighty-four thousand, seven hundred twenty-one".