54638021 has 2 divisors, whose sum is σ = 54638022. Its totient is φ = 54638020.

The previous prime is 54638009. The next prime is 54638047. The reversal of 54638021 is 12083645.

54638021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54612100 + 25921 = 7390^2 + 161^2 .

It is a cyclic number.

It is not a de Polignac number, because 54638021 - 2²² = 50443717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54638081) 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 as a sum of consecutive naturals, namely, 27319010 + 27319011.

It is an arithmetic number, because the mean of its divisors is an integer number (27319011).

Almost surely, 2^54638021 is an apocalyptic number.

It is an amenable number.

54638021 is a deficient number, since it is larger than the sum of its proper divisors (1).

54638021 is an equidigital number, since it uses as much as digits as its factorization.

54638021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 54638021 is about 7391.7535808494. The cubic root of 54638021 is about 379.4591127446.

The spelling of 54638021 in words is "fifty-four million, six hundred thirty-eight thousand, twenty-one".