53550643 has 2 divisors, whose sum is σ = 53550644. Its totient is φ = 53550642.

The previous prime is 53550641. The next prime is 53550661. The reversal of 53550643 is 34605535.

53550643 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 is a cyclic number.

It is not a de Polignac number, because 53550643 - 2¹ = 53550641 is a prime.

Together with 53550641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (53550641) 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, 26775321 + 26775322.

It is an arithmetic number, because the mean of its divisors is an integer number (26775322).

Almost surely, 2^53550643 is an apocalyptic number.

53550643 is a deficient number, since it is larger than the sum of its proper divisors (1).

53550643 is an equidigital number, since it uses as much as digits as its factorization.

53550643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 53550643 is about 7317.8304845084. The cubic root of 53550643 is about 376.9249593249.

The spelling of 53550643 in words is "fifty-three million, five hundred fifty thousand, six hundred forty-three".