51486 has 8 divisors (see below), whose sum is σ = 102984. Its totient is φ = 17160.

The previous prime is 51481. The next prime is 51487. The reversal of 51486 is 68415.

51486 is digitally balanced in base 2 and base 4, because in such bases 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.

51486 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51481) by changing a digit.

51486 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4285 + ... + 4296.

It is an arithmetic number, because the mean of its divisors is an integer number (12873).

2⁵¹⁴⁸⁶ is an apocalyptic number.

51486 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51492).

51486 is a wasteful number, since it uses less digits than its factorization.

51486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8586.

The product of its digits is 960, while the sum is 24.

The square root of 51486 is about 226.9052665762. The cubic root of 51486 is about 37.2017226627.

The spelling of 51486 in words is "fifty-one thousand, four hundred eighty-six".