53065717 has 4 divisors (see below), whose sum is σ = 53453196. Its totient is φ = 52678240.

The previous prime is 53065697. The next prime is 53065723. The reversal of 53065717 is 71756035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36857041 + 16208676 = 6071^2 + 4026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53065717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53065757) 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 in 3 ways as a sum of consecutive naturals, for example, 193534 + ... + 193807.

It is an arithmetic number, because the mean of its divisors is an integer number (13363299).

Almost surely, 2^53065717 is an apocalyptic number.

It is an amenable number.

53065717 is a deficient number, since it is larger than the sum of its proper divisors (387479).

53065717 is a wasteful number, since it uses less digits than its factorization.

53065717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387478.

The product of its (nonzero) digits is 22050, while the sum is 34.

The square root of 53065717 is about 7284.6219531284. The cubic root of 53065717 is about 375.7837640219.

The spelling of 53065717 in words is "fifty-three million, sixty-five thousand, seven hundred seventeen".