54554221 has 4 divisors (see below), whose sum is σ = 54646812. Its totient is φ = 54461632.

The previous prime is 54554209. The next prime is 54554233. The reversal of 54554221 is 12245545.

54554221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (54554209) and next prime (54554233).

It can be written as a sum of positive squares in 2 ways, for example, as 33292900 + 21261321 = 5770^2 + 4611^2 .

It is a cyclic number.

It is not a de Polignac number, because 54554221 - 2⁵ = 54554189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54554221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54557221) 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 3 ways as a sum of consecutive naturals, for example, 45406 + ... + 46591.

It is an arithmetic number, because the mean of its divisors is an integer number (13661703).

Almost surely, 2^54554221 is an apocalyptic number.

It is an amenable number.

54554221 is a deficient number, since it is larger than the sum of its proper divisors (92591).

54554221 is an equidigital number, since it uses as much as digits as its factorization.

54554221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92590.

The product of its digits is 8000, while the sum is 28.

The square root of 54554221 is about 7386.0829266940. The cubic root of 54554221 is about 379.2650174742.

Adding to 54554221 its reverse (12245545), we get a palindrome (66799766).

The spelling of 54554221 in words is "fifty-four million, five hundred fifty-four thousand, two hundred twenty-one".