51304331 has 8 divisors (see below), whose sum is σ = 55409760. Its totient is φ = 47221632.

The previous prime is 51304291. The next prime is 51304333. The reversal of 51304331 is 13340315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51304331 - 2¹⁴ = 51287947 is a prime.

It is a super-2 number, since 2×51304331² = 5264268758715122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51304333) 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, 830 + ... + 10163.

It is an arithmetic number, because the mean of its divisors is an integer number (6926220).

Almost surely, 2^51304331 is an apocalyptic number.

51304331 is a deficient number, since it is larger than the sum of its proper divisors (4105429).

51304331 is a wasteful number, since it uses less digits than its factorization.

51304331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11365.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 51304331 is about 7162.7041681197. The cubic root of 51304331 is about 371.5791551512.

Adding to 51304331 its reverse (13340315), we get a palindrome (64644646).

The spelling of 51304331 in words is "fifty-one million, three hundred four thousand, three hundred thirty-one".