53243717 has 4 divisors (see below), whose sum is σ = 53258316. Its totient is φ = 53229120.

The previous prime is 53243713. The next prime is 53243731. The reversal of 53243717 is 71734235.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 25090081 + 28153636 = 5009^2 + 5306^2 .

It is a cyclic number.

It is not a de Polignac number, because 53243717 - 2² = 53243713 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 (53243713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3383 + ... + 10859.

It is an arithmetic number, because the mean of its divisors is an integer number (13314579).

Almost surely, 2^53243717 is an apocalyptic number.

It is an amenable number.

53243717 is a deficient number, since it is larger than the sum of its proper divisors (14599).

53243717 is an equidigital number, since it uses as much as digits as its factorization.

53243717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14598.

The product of its digits is 17640, while the sum is 32.

The square root of 53243717 is about 7296.8292428972. The cubic root of 53243717 is about 376.2034628593.

The spelling of 53243717 in words is "fifty-three million, two hundred forty-three thousand, seven hundred seventeen".