53187317 has 4 divisors (see below), whose sum is σ = 53203200. Its totient is φ = 53171436.

The previous prime is 53187301. The next prime is 53187319. The reversal of 53187317 is 71378135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53187317 - 2⁴ = 53187301 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 (53187319) 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, 743 + ... + 10340.

It is an arithmetic number, because the mean of its divisors is an integer number (13300800).

Almost surely, 2^53187317 is an apocalyptic number.

It is an amenable number.

53187317 is a deficient number, since it is larger than the sum of its proper divisors (15883).

53187317 is a wasteful number, since it uses less digits than its factorization.

53187317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15882.

The product of its digits is 17640, while the sum is 35.

The square root of 53187317 is about 7292.9635265782. The cubic root of 53187317 is about 376.0705810046.

The spelling of 53187317 in words is "fifty-three million, one hundred eighty-seven thousand, three hundred seventeen".