54212321 has 2 divisors, whose sum is σ = 54212322. Its totient is φ = 54212320.

The previous prime is 54212317. The next prime is 54212341. The reversal of 54212321 is 12321245.

It is an a-pointer prime, because the next prime (54212341) can be obtained adding 54212321 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28090000 + 26122321 = 5300^2 + 5111^2 .

It is a cyclic number.

It is not a de Polignac number, because 54212321 - 2² = 54212317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54212293 and 54212302.

It is not a weakly prime, because it can be changed into another prime (54212341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27106160 + 27106161.

It is an arithmetic number, because the mean of its divisors is an integer number (27106161).

Almost surely, 2^54212321 is an apocalyptic number.

It is an amenable number.

54212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

54212321 is an equidigital number, since it uses as much as digits as its factorization.

54212321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 20.

The square root of 54212321 is about 7362.9016698582. The cubic root of 54212321 is about 378.4710517448.

Adding to 54212321 its reverse (12321245), we get a palindrome (66533566).

The spelling of 54212321 in words is "fifty-four million, two hundred twelve thousand, three hundred twenty-one".