53117985 has 8 divisors (see below), whose sum is σ = 84988800. Its totient is φ = 28329584.

The previous prime is 53117969. The next prime is 53117993. The reversal of 53117985 is 58971135.

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 53117985 - 2⁴ = 53117969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770585 + ... + 1770614.

It is an arithmetic number, because the mean of its divisors is an integer number (10623600).

Almost surely, 2^53117985 is an apocalyptic number.

It is an amenable number.

53117985 is a deficient number, since it is larger than the sum of its proper divisors (31870815).

53117985 is a wasteful number, since it uses less digits than its factorization.

53117985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541207.

The product of its digits is 37800, while the sum is 39.

The square root of 53117985 is about 7288.2086276396. The cubic root of 53117985 is about 375.9071017855.

The spelling of 53117985 in words is "fifty-three million, one hundred seventeen thousand, nine hundred eighty-five".