54020221 has 2 divisors, whose sum is σ = 54020222. Its totient is φ = 54020220.

The previous prime is 54020179. The next prime is 54020257. The reversal of 54020221 is 12202045.

54020221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53494596 + 525625 = 7314^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 54020221 - 2⁷ = 54020093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54020195 and 54020204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54120221) 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 as a sum of consecutive naturals, namely, 27010110 + 27010111.

It is an arithmetic number, because the mean of its divisors is an integer number (27010111).

Almost surely, 2^54020221 is an apocalyptic number.

It is an amenable number.

54020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

54020221 is an equidigital number, since it uses as much as digits as its factorization.

54020221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 54020221 is about 7349.8449643513. The cubic root of 54020221 is about 378.0234884577.

Adding to 54020221 its reverse (12202045), we get a palindrome (66222266).

The spelling of 54020221 in words is "fifty-four million, twenty thousand, two hundred twenty-one".