51530323 has 8 divisors (see below), whose sum is σ = 55648208. Its totient is φ = 47434464.

The previous prime is 51530321. The next prime is 51530329. The reversal of 51530323 is 32303515.

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 51530323 - 2¹ = 51530321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51530294 and 51530303.

It is not an unprimeable number, because it can be changed into a prime (51530321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465 + ... + 10162.

It is an arithmetic number, because the mean of its divisors is an integer number (6956026).

Almost surely, 2^51530323 is an apocalyptic number.

51530323 is a deficient number, since it is larger than the sum of its proper divisors (4117885).

51530323 is a wasteful number, since it uses less digits than its factorization.

51530323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11013.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 51530323 is about 7178.4624398265. The cubic root of 51530323 is about 372.1239494269.

Adding to 51530323 its reverse (32303515), we get a palindrome (83833838).

The spelling of 51530323 in words is "fifty-one million, five hundred thirty thousand, three hundred twenty-three".