51342 has 16 divisors (see below), whose sum is σ = 105600. Its totient is φ = 16632.

The previous prime is 51341. The next prime is 51343. The reversal of 51342 is 24315.

It is an interprime number because it is at equal distance from previous prime (51341) and next prime (51343).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159 + ... + 357.

It is an arithmetic number, because the mean of its divisors is an integer number (6600).

2⁵¹³⁴² is an apocalyptic number.

51342 is an abundant number, since it is smaller than the sum of its proper divisors (54258).

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 (52800).

51342 is a wasteful number, since it uses less digits than its factorization.

51342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247.

The product of its digits is 120, while the sum is 15.

The square root of 51342 is about 226.5877313537. The cubic root of 51342 is about 37.1670073992.

Adding to 51342 its reverse (24315), we get a palindrome (75657).

It can be divided in two parts, 513 and 42, that added together give a palindrome (555).

The spelling of 51342 in words is "fifty-one thousand, three hundred forty-two".