51028 has 6 divisors (see below), whose sum is σ = 89306. Its totient is φ = 25512.

The previous prime is 51001. The next prime is 51031. The reversal of 51028 is 82015.

It is a happy number.

51028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 44944 + 6084 = 212^2 + 78^2 .

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

51028 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 as a sum of consecutive naturals, namely, 6375 + ... + 6382.

2⁵¹⁰²⁸ is an apocalyptic number.

It is an amenable number.

51028 is a deficient number, since it is larger than the sum of its proper divisors (38278).

51028 is a wasteful number, since it uses less digits than its factorization.

51028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12761 (or 12759 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 51028 is about 225.8937803482. The cubic root of 51028 is about 37.0910831199.

The spelling of 51028 in words is "fifty-one thousand, twenty-eight".