546541661 has 2 divisors, whose sum is σ = 546541662. Its totient is φ = 546541660.

The previous prime is 546541651. The next prime is 546541673. The reversal of 546541661 is 166145645.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483736036 + 62805625 = 21994^2 + 7925^2 .

It is a cyclic number.

It is not a de Polignac number, because 546541661 - 2¹⁴ = 546525277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (546541621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273270830 + 273270831.

It is an arithmetic number, because the mean of its divisors is an integer number (273270831).

Almost surely, 2^546541661 is an apocalyptic number.

It is an amenable number.

546541661 is a deficient number, since it is larger than the sum of its proper divisors (1).

546541661 is an equidigital number, since it uses as much as digits as its factorization.

546541661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 38.

The square root of 546541661 is about 23378.2304933457. The cubic root of 546541661 is about 817.6003915528.

The spelling of 546541661 in words is "five hundred forty-six million, five hundred forty-one thousand, six hundred sixty-one".