546562021 has 12 divisors (see below), whose sum is σ = 562187332. Its totient is φ = 531360000.

The previous prime is 546561991. The next prime is 546562067. The reversal of 546562021 is 120265645.

It can be written as a sum of positive squares in 6 ways, for example, as 94361796 + 452200225 = 9714^2 + 21265^2 .

It is not a de Polignac number, because 546562021 - 2⁷ = 546561893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (546562091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 909121 + ... + 909721.

Almost surely, 2^546562021 is an apocalyptic number.

It is an amenable number.

546562021 is a deficient number, since it is larger than the sum of its proper divisors (15625311).

546562021 is an equidigital number, since it uses as much as digits as its factorization.

546562021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224 (or 1183 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 546562021 is about 23378.6659371317. The cubic root of 546562021 is about 817.6105439580.

The spelling of 546562021 in words is "five hundred forty-six million, five hundred sixty-two thousand, twenty-one".