543148261 has 2 divisors, whose sum is σ = 543148262. Its totient is φ = 543148260.

The previous prime is 543148259. The next prime is 543148321. The reversal of 543148261 is 162841345.

543148261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272052036 + 271096225 = 16494^2 + 16465^2 .

It is a cyclic number.

It is not a de Polignac number, because 543148261 - 2¹ = 543148259 is a prime.

Together with 543148259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (543148961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271574130 + 271574131.

It is an arithmetic number, because the mean of its divisors is an integer number (271574131).

Almost surely, 2^543148261 is an apocalyptic number.

It is an amenable number.

543148261 is a deficient number, since it is larger than the sum of its proper divisors (1).

543148261 is an equidigital number, since it uses as much as digits as its factorization.

543148261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 34.

The square root of 543148261 is about 23305.5414225887. The cubic root of 543148261 is about 815.9047555797.

The spelling of 543148261 in words is "five hundred forty-three million, one hundred forty-eight thousand, two hundred sixty-one".