546000021 has 20 divisors (see below), whose sum is σ = 932149152. Its totient is φ = 311999688.

The previous prime is 546000019. The next prime is 546000031. The reversal of 546000021 is 120000645.

It is a happy number.

It is not a de Polignac number, because 546000021 - 2¹ = 546000019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 545999958 and 546000003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (546000001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 480915 + ... + 482048.

Almost surely, 2^546000021 is an apocalyptic number.

It is an amenable number.

546000021 is a deficient number, since it is larger than the sum of its proper divisors (386149131).

546000021 is an equidigital number, since it uses as much as digits as its factorization.

546000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962982 (or 962973 counting only the distinct ones).

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

The square root of 546000021 is about 23366.6433404544. The cubic root of 546000021 is about 817.3302130349.

Adding to 546000021 its reverse (120000645), we get a palindrome (666000666).

The spelling of 546000021 in words is "five hundred forty-six million, twenty-one", and thus it is an aban number.