546721057 has 4 divisors (see below), whose sum is σ = 546774340. Its totient is φ = 546667776.

The previous prime is 546721051. The next prime is 546721069. The reversal of 546721057 is 750127645.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 275427216 + 271293841 = 16596^2 + 16471^2 .

It is a cyclic number.

It is not a de Polignac number, because 546721057 - 2¹⁹ = 546196769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (546721051) 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 in 3 ways as a sum of consecutive naturals, for example, 5832 + ... + 33577.

It is an arithmetic number, because the mean of its divisors is an integer number (136693585).

Almost surely, 2^546721057 is an apocalyptic number.

It is an amenable number.

546721057 is a deficient number, since it is larger than the sum of its proper divisors (53283).

546721057 is a wasteful number, since it uses less digits than its factorization.

546721057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53282.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 546721057 is about 23382.0669958838. The cubic root of 546721057 is about 817.6898377349.

The spelling of 546721057 in words is "five hundred forty-six million, seven hundred twenty-one thousand, fifty-seven".