546021 has 28 divisors (see below), whose sum is σ = 944352. Its totient is φ = 309096.

The previous prime is 546019. The next prime is 546031. The reversal of 546021 is 120645.

It is a happy number.

It is not a de Polignac number, because 546021 - 2¹ = 546019 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

546021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 545985 and 546003.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 546021.

It is not an unprimeable number, because it can be changed into a prime (546001) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5050 + ... + 5156.

2⁵⁴⁶⁰²¹ is an apocalyptic number.

It is an amenable number.

546021 is a deficient number, since it is larger than the sum of its proper divisors (398331).

546021 is an equidigital number, since it uses as much as digits as its factorization.

546021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 546021 is about 738.9323379038. The cubic root of 546021 is about 81.7340681014.

Adding to 546021 its reverse (120645), we get a palindrome (666666).

The spelling of 546021 in words is "five hundred forty-six thousand, twenty-one".