54336221 has 2 divisors, whose sum is σ = 54336222. Its totient is φ = 54336220.

The previous prime is 54336203. The next prime is 54336223. The reversal of 54336221 is 12263345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54316900 + 19321 = 7370^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 54336221 - 2¹⁸ = 54074077 is a prime.

Together with 54336223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54336223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27168110 + 27168111.

It is an arithmetic number, because the mean of its divisors is an integer number (27168111).

Almost surely, 2^54336221 is an apocalyptic number.

It is an amenable number.

54336221 is a deficient number, since it is larger than the sum of its proper divisors (1).

54336221 is an equidigital number, since it uses as much as digits as its factorization.

54336221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 26.

The square root of 54336221 is about 7371.3106704303. The cubic root of 54336221 is about 378.7591589750.

Adding to 54336221 its reverse (12263345), we get a palindrome (66599566).

The spelling of 54336221 in words is "fifty-four million, three hundred thirty-six thousand, two hundred twenty-one".