53171647 has 2 divisors, whose sum is σ = 53171648. Its totient is φ = 53171646.

The previous prime is 53171641. The next prime is 53171659. The reversal of 53171647 is 74617135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53171647 - 2¹⁵ = 53138879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53171641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26585823 + 26585824.

It is an arithmetic number, because the mean of its divisors is an integer number (26585824).

Almost surely, 2^53171647 is an apocalyptic number.

53171647 is a deficient number, since it is larger than the sum of its proper divisors (1).

53171647 is an equidigital number, since it uses as much as digits as its factorization.

53171647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 34.

The square root of 53171647 is about 7291.8891242256. The cubic root of 53171647 is about 376.0336448504.

The spelling of 53171647 in words is "fifty-three million, one hundred seventy-one thousand, six hundred forty-seven".