53664671 has 2 divisors, whose sum is σ = 53664672. Its totient is φ = 53664670.

The previous prime is 53664649. The next prime is 53664679. The reversal of 53664671 is 17646635.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53664671 - 2¹⁰ = 53663647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53664679) 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, 26832335 + 26832336.

It is an arithmetic number, because the mean of its divisors is an integer number (26832336).

Almost surely, 2^53664671 is an apocalyptic number.

53664671 is a deficient number, since it is larger than the sum of its proper divisors (1).

53664671 is an equidigital number, since it uses as much as digits as its factorization.

53664671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 53664671 is about 7325.6174483794. The cubic root of 53664671 is about 377.1923045668.

The spelling of 53664671 in words is "fifty-three million, six hundred sixty-four thousand, six hundred seventy-one".