546308221 has 2 divisors, whose sum is σ = 546308222. Its totient is φ = 546308220.

The previous prime is 546308207. The next prime is 546308233. The reversal of 546308221 is 122803645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 546156900 + 151321 = 23370^2 + 389^2 .

It is a cyclic number.

It is not a de Polignac number, because 546308221 - 2⁷ = 546308093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (546308251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273154110 + 273154111.

It is an arithmetic number, because the mean of its divisors is an integer number (273154111).

Almost surely, 2^546308221 is an apocalyptic number.

It is an amenable number.

546308221 is a deficient number, since it is larger than the sum of its proper divisors (1).

546308221 is an equidigital number, since it uses as much as digits as its factorization.

546308221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 546308221 is about 23373.2372811299. The cubic root of 546308221 is about 817.4839699214.

The spelling of 546308221 in words is "five hundred forty-six million, three hundred eight thousand, two hundred twenty-one".