51385 has 8 divisors (see below), whose sum is σ = 63360. Its totient is φ = 39984.

The previous prime is 51383. The next prime is 51407. The reversal of 51385 is 58315.

51385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51385 - 2¹ = 51383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51383) 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, 96 + ... + 334.

It is an arithmetic number, because the mean of its divisors is an integer number (7920).

2⁵¹³⁸⁵ is an apocalyptic number.

It is an amenable number.

51385 is a deficient number, since it is larger than the sum of its proper divisors (11975).

51385 is a wasteful number, since it uses less digits than its factorization.

51385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287.

The product of its digits is 600, while the sum is 22.

The square root of 51385 is about 226.6825974794. The cubic root of 51385 is about 37.1773805528.

The spelling of 51385 in words is "fifty-one thousand, three hundred eighty-five".