53389447 has 2 divisors, whose sum is σ = 53389448. Its totient is φ = 53389446.

The previous prime is 53389433. The next prime is 53389451. The reversal of 53389447 is 74498335.

53389447 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53389447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53389247) 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, 26694723 + 26694724.

It is an arithmetic number, because the mean of its divisors is an integer number (26694724).

Almost surely, 2^53389447 is an apocalyptic number.

53389447 is a deficient number, since it is larger than the sum of its proper divisors (1).

53389447 is an equidigital number, since it uses as much as digits as its factorization.

53389447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 43.

The square root of 53389447 is about 7306.8082635307. The cubic root of 53389447 is about 376.5463777364.

The spelling of 53389447 in words is "fifty-three million, three hundred eighty-nine thousand, four hundred forty-seven".