546921 has 12 divisors (see below), whose sum is σ = 802672. Its totient is φ = 358776.

The previous prime is 546919. The next prime is 546937. The reversal of 546921 is 129645.

546921 is nontrivially palindromic in base 7.

It is not a de Polignac number, because 546921 - 2¹ = 546919 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 546921.

It is not an unprimeable number, because it can be changed into a prime (546961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150 + ... + 1056.

2⁵⁴⁶⁹²¹ is an apocalyptic number.

It is an amenable number.

546921 is a deficient number, since it is larger than the sum of its proper divisors (255751).

546921 is a wasteful number, since it uses less digits than its factorization.

546921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 977 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 546921 is about 739.5410739100. The cubic root of 546921 is about 81.7789505521.

Adding to 546921 its product of digits (2160), we get a square (549081 = 741²).

The spelling of 546921 in words is "five hundred forty-six thousand, nine hundred twenty-one".