51256 has 16 divisors (see below), whose sum is σ = 99000. Its totient is φ = 24864.

The previous prime is 51241. The next prime is 51257. The reversal of 51256 is 65215.

It is a happy number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51257) 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, 270 + ... + 418.

2⁵¹²⁵⁶ is an apocalyptic number.

It is an amenable number.

51256 is a deficient number, since it is larger than the sum of its proper divisors (47744).

51256 is a wasteful number, since it uses less digits than its factorization.

51256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 194 counting only the distinct ones).

The product of its digits is 300, while the sum is 19.

The square root of 51256 is about 226.3978798487. The cubic root of 51256 is about 37.1462437036.

The spelling of 51256 in words is "fifty-one thousand, two hundred fifty-six".