54441221 has 4 divisors (see below), whose sum is σ = 54635244. Its totient is φ = 54247200.

The previous prime is 54441209. The next prime is 54441227. The reversal of 54441221 is 12214445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12214445 = 5 ⋅2442889.

It can be written as a sum of positive squares in 2 ways, for example, as 21252100 + 33189121 = 4610^2 + 5761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54441221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54441227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96590 + ... + 97151.

It is an arithmetic number, because the mean of its divisors is an integer number (13658811).

Almost surely, 2^54441221 is an apocalyptic number.

It is an amenable number.

54441221 is a deficient number, since it is larger than the sum of its proper divisors (194023).

54441221 is a wasteful number, since it uses less digits than its factorization.

54441221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194022.

The product of its digits is 1280, while the sum is 23.

The square root of 54441221 is about 7378.4294399283. The cubic root of 54441221 is about 379.0029749861.

Adding to 54441221 its reverse (12214445), we get a palindrome (66655666).

The spelling of 54441221 in words is "fifty-four million, four hundred forty-one thousand, two hundred twenty-one".