53453921 has 2 divisors, whose sum is σ = 53453922. Its totient is φ = 53453920.

The previous prime is 53453891. The next prime is 53453963. The reversal of 53453921 is 12935435.

53453921 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., 34093921 + 19360000 = 5839^2 + 4400^2 .

It is a cyclic number.

It is not a de Polignac number, because 53453921 - 2¹⁸ = 53191777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53453971) 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, 26726960 + 26726961.

It is an arithmetic number, because the mean of its divisors is an integer number (26726961).

Almost surely, 2^53453921 is an apocalyptic number.

It is an amenable number.

53453921 is a deficient number, since it is larger than the sum of its proper divisors (1).

53453921 is an equidigital number, since it uses as much as digits as its factorization.

53453921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 32.

The square root of 53453921 is about 7311.2188450353. The cubic root of 53453921 is about 376.6978913560.

The spelling of 53453921 in words is "fifty-three million, four hundred fifty-three thousand, nine hundred twenty-one".