54668921 has 2 divisors, whose sum is σ = 54668922. Its totient is φ = 54668920.

The previous prime is 54668899. The next prime is 54668959. The reversal of 54668921 is 12986645.

It is a happy number.

54668921 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., 53071225 + 1597696 = 7285^2 + 1264^2 .

It is a cyclic number.

It is not a de Polignac number, because 54668921 - 2²² = 50474617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54668321) 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, 27334460 + 27334461.

It is an arithmetic number, because the mean of its divisors is an integer number (27334461).

Almost surely, 2^54668921 is an apocalyptic number.

It is an amenable number.

54668921 is a deficient number, since it is larger than the sum of its proper divisors (1).

54668921 is an equidigital number, since it uses as much as digits as its factorization.

54668921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 41.

The square root of 54668921 is about 7393.8434524948. The cubic root of 54668921 is about 379.5306323976.

The spelling of 54668921 in words is "fifty-four million, six hundred sixty-eight thousand, nine hundred twenty-one".