54321545304221 has 16 divisors (see below), whose sum is σ = 58797982782000. Its totient is φ = 49887666651648.

The previous prime is 54321545304197. The next prime is 54321545304281. The reversal of 54321545304221 is 12240354512345.

It can be written as a sum of positive squares in 8 ways, for example, as 2077763688025 + 52243781616196 = 1441445^2 + 7227986^2 .

It is a cyclic number.

It is not a de Polignac number, because 54321545304221 - 2¹⁴ = 54321545287837 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 (54321545304281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230753945 + ... + 230989233.

It is an arithmetic number, because the mean of its divisors is an integer number (3674873923875).

Almost surely, 2^{54321545304221} is an apocalyptic number.

It is an amenable number.

54321545304221 is a deficient number, since it is larger than the sum of its proper divisors (4476437477779).

54321545304221 is a wasteful number, since it uses less digits than its factorization.

54321545304221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325648.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 54321545304221 its reverse (12240354512345), we get a palindrome (66561899816566).

The spelling of 54321545304221 in words is "fifty-four trillion, three hundred twenty-one billion, five hundred forty-five million, three hundred four thousand, two hundred twenty-one".