546721261 has 2 divisors, whose sum is σ = 546721262. Its totient is φ = 546721260.

The previous prime is 546721211. The next prime is 546721267. The reversal of 546721261 is 162127645.

546721261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420496036 + 126225225 = 20506^2 + 11235^2 .

It is a cyclic number.

It is not a de Polignac number, because 546721261 - 2⁹ = 546720749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (546721267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273360630 + 273360631.

It is an arithmetic number, because the mean of its divisors is an integer number (273360631).

Almost surely, 2^546721261 is an apocalyptic number.

It is an amenable number.

546721261 is a deficient number, since it is larger than the sum of its proper divisors (1).

546721261 is an equidigital number, since it uses as much as digits as its factorization.

546721261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 546721261 is about 23382.0713582009. The cubic root of 546721261 is about 817.6899394374.

The spelling of 546721261 in words is "five hundred forty-six million, seven hundred twenty-one thousand, two hundred sixty-one".