51078 has 8 divisors (see below), whose sum is σ = 102168. Its totient is φ = 17024.

The previous prime is 51071. The next prime is 51109. The reversal of 51078 is 87015.

It is a happy number.

51078 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.

51078 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51071) 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, 4251 + ... + 4262.

It is an arithmetic number, because the mean of its divisors is an integer number (12771).

2⁵¹⁰⁷⁸ is an apocalyptic number.

51078 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 (51084).

51078 is a wasteful number, since it uses less digits than its factorization.

51078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8518.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 51078 is about 226.0044247354. The cubic root of 51078 is about 37.1031937830.

Subtracting 51078 from its reverse (87015), we obtain a cube (35937 = 33³).

It can be divided in two parts, 5107 and 8, that added together give a palindrome (5115).

The spelling of 51078 in words is "fifty-one thousand, seventy-eight".