53944921 has 2 divisors, whose sum is σ = 53944922. Its totient is φ = 53944920.

The previous prime is 53944907. The next prime is 53944931. The reversal of 53944921 is 12944935.

53944921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39237696 + 14707225 = 6264^2 + 3835^2 .

It is a cyclic number.

It is not a de Polignac number, because 53944921 - 2¹⁷ = 53813849 is a prime.

It is not a weakly prime, because it can be changed into another prime (53944931) 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, 26972460 + 26972461.

It is an arithmetic number, because the mean of its divisors is an integer number (26972461).

Almost surely, 2^53944921 is an apocalyptic number.

It is an amenable number.

53944921 is a deficient number, since it is larger than the sum of its proper divisors (1).

53944921 is an equidigital number, since it uses as much as digits as its factorization.

53944921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 53944921 is about 7344.7206209631. The cubic root of 53944921 is about 377.8477616373.

The spelling of 53944921 in words is "fifty-three million, nine hundred forty-four thousand, nine hundred twenty-one".