53733521 has 2 divisors, whose sum is σ = 53733522. Its totient is φ = 53733520.

The previous prime is 53733499. The next prime is 53733527. The reversal of 53733521 is 12533735.

53733521 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., 48720400 + 5013121 = 6980^2 + 2239^2 .

It is a cyclic number.

It is not a de Polignac number, because 53733521 - 2¹⁴ = 53717137 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (53733527) 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, 26866760 + 26866761.

It is an arithmetic number, because the mean of its divisors is an integer number (26866761).

Almost surely, 2^53733521 is an apocalyptic number.

It is an amenable number.

53733521 is a deficient number, since it is larger than the sum of its proper divisors (1).

53733521 is an equidigital number, since it uses as much as digits as its factorization.

53733521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 29.

The square root of 53733521 is about 7330.3152046825. The cubic root of 53733521 is about 377.3535440534.

The spelling of 53733521 in words is "fifty-three million, seven hundred thirty-three thousand, five hundred twenty-one".