546542561 has 2 divisors, whose sum is σ = 546542562. Its totient is φ = 546542560.

The previous prime is 546542527. The next prime is 546542597. The reversal of 546542561 is 165245645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 544942336 + 1600225 = 23344^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 546542561 - 2¹⁰ = 546541537 is a prime.

It is not a weakly prime, because it can be changed into another prime (546542761) 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, 273271280 + 273271281.

It is an arithmetic number, because the mean of its divisors is an integer number (273271281).

Almost surely, 2^546542561 is an apocalyptic number.

It is an amenable number.

546542561 is a deficient number, since it is larger than the sum of its proper divisors (1).

546542561 is an equidigital number, since it uses as much as digits as its factorization.

546542561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 38.

The square root of 546542561 is about 23378.2497420145. The cubic root of 546542561 is about 817.6008403383.

The spelling of 546542561 in words is "five hundred forty-six million, five hundred forty-two thousand, five hundred sixty-one".