53158717 has 8 divisors (see below), whose sum is σ = 53624376. Its totient is φ = 52695552.

The previous prime is 53158709. The next prime is 53158753. The reversal of 53158717 is 71785135.

It can be written as a sum of positive squares in 4 ways, for example, as 10830681 + 42328036 = 3291^2 + 6506^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53158717 - 2³ = 53158709 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 (53158117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78183 + ... + 78859.

It is an arithmetic number, because the mean of its divisors is an integer number (6703047).

Almost surely, 2^53158717 is an apocalyptic number.

It is an amenable number.

53158717 is a deficient number, since it is larger than the sum of its proper divisors (465659).

53158717 is a wasteful number, since it uses less digits than its factorization.

53158717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247.

The product of its digits is 29400, while the sum is 37.

The square root of 53158717 is about 7291.0024687967. The cubic root of 53158717 is about 376.0031617548.

The spelling of 53158717 in words is "fifty-three million, one hundred fifty-eight thousand, seven hundred seventeen".