546430221 has 12 divisors (see below), whose sum is σ = 791863072. Its totient is φ = 363098376.

The previous prime is 546430217. The next prime is 546430223. The reversal of 546430221 is 122034645.

546430221 is a `hidden beast` number, since 5 + 4 + 6 + 430 + 221 = 666.

It is not a de Polignac number, because 546430221 - 2² = 546430217 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 (546430223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96121 + ... + 101646.

Almost surely, 2^546430221 is an apocalyptic number.

It is an amenable number.

546430221 is a deficient number, since it is larger than the sum of its proper divisors (245432851).

546430221 is a wasteful number, since it uses less digits than its factorization.

546430221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198080 (or 198077 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 546430221 is about 23375.8469579179. The cubic root of 546430221 is about 817.5448181248.

Adding to 546430221 its reverse (122034645), we get a palindrome (668464866).

The spelling of 546430221 in words is "five hundred forty-six million, four hundred thirty thousand, two hundred twenty-one".