546820081 has 2 divisors, whose sum is σ = 546820082. Its totient is φ = 546820080.

The previous prime is 546820051. The next prime is 546820103. The reversal of 546820081 is 180028645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 454371856 + 92448225 = 21316^2 + 9615^2 .

It is a cyclic number.

It is not a de Polignac number, because 546820081 - 2⁵ = 546820049 is a prime.

It is a super-2 number, since 2×546820081² = 598024401969693122, which contains 22 as substring.

It is equal to p_28687030 and since 546820081 and 28687030 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (546820051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273410040 + 273410041.

It is an arithmetic number, because the mean of its divisors is an integer number (273410041).

Almost surely, 2^546820081 is an apocalyptic number.

It is an amenable number.

546820081 is a deficient number, since it is larger than the sum of its proper divisors (1).

546820081 is an equidigital number, since it uses as much as digits as its factorization.

546820081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 546820081 is about 23384.1844202444. The cubic root of 546820081 is about 817.7392023541.

The spelling of 546820081 in words is "five hundred forty-six million, eight hundred twenty thousand, eighty-one".