51238 has 16 divisors (see below), whose sum is σ = 89424. Its totient is φ = 21760.

The previous prime is 51229. The next prime is 51239. The reversal of 51238 is 83215.

It is a happy number.

It is an Ulam number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51239) 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, 306 + ... + 442.

It is an arithmetic number, because the mean of its divisors is an integer number (5589).

2⁵¹²³⁸ is an apocalyptic number.

51238 is a deficient number, since it is larger than the sum of its proper divisors (38186).

51238 is a wasteful number, since it uses less digits than its factorization.

51238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167.

The product of its digits is 240, while the sum is 19.

The square root of 51238 is about 226.3581233356. The cubic root of 51238 is about 37.1418948750.

It can be divided in two parts, 51 and 238, that added together give a square (289 = 17²).

The spelling of 51238 in words is "fifty-one thousand, two hundred thirty-eight".