53117857 has 16 divisors (see below), whose sum is σ = 58988160. Its totient is φ = 47521152.

The previous prime is 53117851. The next prime is 53117881. The reversal of 53117857 is 75871135.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53117857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53117851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93069 + ... + 93637.

It is an arithmetic number, because the mean of its divisors is an integer number (3686760).

Almost surely, 2^53117857 is an apocalyptic number.

It is an amenable number.

53117857 is a deficient number, since it is larger than the sum of its proper divisors (5870303).

53117857 is a wasteful number, since it uses less digits than its factorization.

53117857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

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

The square root of 53117857 is about 7288.1998463269. The cubic root of 53117857 is about 375.9067998404.

The spelling of 53117857 in words is "fifty-three million, one hundred seventeen thousand, eight hundred fifty-seven".