546989021 has 2 divisors, whose sum is σ = 546989022. Its totient is φ = 546989020.

The previous prime is 546988999. The next prime is 546989083. The reversal of 546989021 is 120989645.

546989021 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., 544708921 + 2280100 = 23339^2 + 1510^2 .

It is a cyclic number.

It is not a de Polignac number, because 546989021 - 2¹⁸ = 546726877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (546989921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273494510 + 273494511.

It is an arithmetic number, because the mean of its divisors is an integer number (273494511).

Almost surely, 2^546989021 is an apocalyptic number.

It is an amenable number.

546989021 is a deficient number, since it is larger than the sum of its proper divisors (1).

546989021 is an equidigital number, since it uses as much as digits as its factorization.

546989021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 546989021 is about 23387.7964118042. The cubic root of 546989021 is about 817.8234071599.

The spelling of 546989021 in words is "five hundred forty-six million, nine hundred eighty-nine thousand, twenty-one".