53387791 has 2 divisors, whose sum is σ = 53387792. Its totient is φ = 53387790.

The previous prime is 53387783. The next prime is 53387809. The reversal of 53387791 is 19778335.

53387791 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 53387791 - 2³ = 53387783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53387731) 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, 26693895 + 26693896.

It is an arithmetic number, because the mean of its divisors is an integer number (26693896).

Almost surely, 2^53387791 is an apocalyptic number.

53387791 is a deficient number, since it is larger than the sum of its proper divisors (1).

53387791 is an equidigital number, since it uses as much as digits as its factorization.

53387791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 53387791 is about 7306.6949436801. The cubic root of 53387791 is about 376.5424845373.

The spelling of 53387791 in words is "fifty-three million, three hundred eighty-seven thousand, seven hundred ninety-one".