548516161 has 2 divisors, whose sum is σ = 548516162. Its totient is φ = 548516160.

The previous prime is 548516159. The next prime is 548516183. The reversal of 548516161 is 161615845.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 441000000 + 107516161 = 21000^2 + 10369^2 .

It is a cyclic number.

It is not a de Polignac number, because 548516161 - 2¹ = 548516159 is a prime.

Together with 548516159, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 548516161.

It is not a weakly prime, because it can be changed into another prime (548516141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274258080 + 274258081.

It is an arithmetic number, because the mean of its divisors is an integer number (274258081).

Almost surely, 2^548516161 is an apocalyptic number.

It is an amenable number.

548516161 is a deficient number, since it is larger than the sum of its proper divisors (1).

548516161 is an equidigital number, since it uses as much as digits as its factorization.

548516161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 37.

The square root of 548516161 is about 23420.4218792062. The cubic root of 548516161 is about 818.5837943535.

The spelling of 548516161 in words is "five hundred forty-eight million, five hundred sixteen thousand, one hundred sixty-one".