54004221 has 12 divisors (see below), whose sum is σ = 78883740. Its totient is φ = 35597760.

The previous prime is 54004219. The next prime is 54004229. The reversal of 54004221 is 12240045.

It can be written as a sum of positive squares in 2 ways, for example, as 21068100 + 32936121 = 4590^2 + 5739^2 .

It is not a de Polignac number, because 54004221 - 2¹ = 54004219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 54004194 and 54004203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54004229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32910 + ... + 34511.

It is an arithmetic number, because the mean of its divisors is an integer number (6573645).

Almost surely, 2^54004221 is an apocalyptic number.

It is an amenable number.

54004221 is a deficient number, since it is larger than the sum of its proper divisors (24879519).

54004221 is a wasteful number, since it uses less digits than its factorization.

54004221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67516 (or 67513 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 54004221 is about 7348.7564254097. The cubic root of 54004221 is about 377.9861630947.

Adding to 54004221 its reverse (12240045), we get a palindrome (66244266).

The spelling of 54004221 in words is "fifty-four million, four thousand, two hundred twenty-one".