53716391 has 2 divisors, whose sum is σ = 53716392. Its totient is φ = 53716390.

The previous prime is 53716361. The next prime is 53716409. The reversal of 53716391 is 19361735.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53716391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53716321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26858195 + 26858196.

It is an arithmetic number, because the mean of its divisors is an integer number (26858196).

Almost surely, 2^53716391 is an apocalyptic number.

53716391 is a deficient number, since it is larger than the sum of its proper divisors (1).

53716391 is an equidigital number, since it uses as much as digits as its factorization.

53716391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 35.

The square root of 53716391 is about 7329.1466761145. The cubic root of 53716391 is about 377.3134402652.

The spelling of 53716391 in words is "fifty-three million, seven hundred sixteen thousand, three hundred ninety-one".