53355691 has 2 divisors, whose sum is σ = 53355692. Its totient is φ = 53355690.

The previous prime is 53355689. The next prime is 53355703. The reversal of 53355691 is 19655335.

53355691 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 53355691 - 2¹ = 53355689 is a prime.

Together with 53355689, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53355691.

It is not a weakly prime, because it can be changed into another prime (53355671) 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, 26677845 + 26677846.

It is an arithmetic number, because the mean of its divisors is an integer number (26677846).

Almost surely, 2^53355691 is an apocalyptic number.

53355691 is a deficient number, since it is larger than the sum of its proper divisors (1).

53355691 is an equidigital number, since it uses as much as digits as its factorization.

53355691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60750, while the sum is 37.

The square root of 53355691 is about 7304.4979978093. The cubic root of 53355691 is about 376.4670026289.

It can be divided in two parts, 5335 and 5691, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 53355691 in words is "fifty-three million, three hundred fifty-five thousand, six hundred ninety-one".