53685847 has 4 divisors (see below), whose sum is σ = 56843856. Its totient is φ = 50527840.

The previous prime is 53685833. The next prime is 53685857. The reversal of 53685847 is 74858635.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53685847 - 2¹⁵ = 53653079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53685797 and 53685806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53685817) 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, 1578979 + ... + 1579012.

It is an arithmetic number, because the mean of its divisors is an integer number (14210964).

Almost surely, 2^53685847 is an apocalyptic number.

53685847 is a deficient number, since it is larger than the sum of its proper divisors (3158009).

53685847 is a wasteful number, since it uses less digits than its factorization.

53685847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158008.

The product of its digits is 806400, while the sum is 46.

The square root of 53685847 is about 7327.0626447438. The cubic root of 53685847 is about 377.2419112181.

The spelling of 53685847 in words is "fifty-three million, six hundred eighty-five thousand, eight hundred forty-seven".