51330 has 32 divisors (see below), whose sum is σ = 129600. Its totient is φ = 12992.

The previous prime is 51329. The next prime is 51341. The reversal of 51330 is 3315.

It is a happy number.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841 + ... + 899.

It is an arithmetic number, because the mean of its divisors is an integer number (4050).

2⁵¹³³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64800).

51330 is an abundant number, since it is smaller than the sum of its proper divisors (78270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51330 is a wasteful number, since it uses less digits than its factorization.

51330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98.

The product of its (nonzero) digits is 45, while the sum is 12.

The square root of 51330 is about 226.5612499966. The cubic root of 51330 is about 37.1641115320.

Adding to 51330 its reverse (3315), we get a palindrome (54645).

The spelling of 51330 in words is "fifty-one thousand, three hundred thirty".