540854221 has 2 divisors, whose sum is σ = 540854222. Its totient is φ = 540854220.

The previous prime is 540854207. The next prime is 540854231. The reversal of 540854221 is 122458045.

540854221 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., 515744100 + 25110121 = 22710^2 + 5011^2 .

It is a cyclic number.

It is not a de Polignac number, because 540854221 - 2⁵ = 540854189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540854231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270427110 + 270427111.

It is an arithmetic number, because the mean of its divisors is an integer number (270427111).

Almost surely, 2^540854221 is an apocalyptic number.

It is an amenable number.

540854221 is a deficient number, since it is larger than the sum of its proper divisors (1).

540854221 is an equidigital number, since it uses as much as digits as its factorization.

540854221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12800, while the sum is 31.

The square root of 540854221 is about 23256.2727237191. The cubic root of 540854221 is about 814.7544499700.

The spelling of 540854221 in words is "five hundred forty million, eight hundred fifty-four thousand, two hundred twenty-one".