51204323 has 4 divisors (see below), whose sum is σ = 54216360. Its totient is φ = 48192288.

The previous prime is 51204319. The next prime is 51204347. The reversal of 51204323 is 32340215.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51204323 - 2² = 51204319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51204295 and 51204304.

It is not an unprimeable number, because it can be changed into a prime (51204353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1505993 + ... + 1506026.

It is an arithmetic number, because the mean of its divisors is an integer number (13554090).

Almost surely, 2^51204323 is an apocalyptic number.

51204323 is a deficient number, since it is larger than the sum of its proper divisors (3012037).

51204323 is a wasteful number, since it uses less digits than its factorization.

51204323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012036.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 51204323 is about 7155.7196004315. The cubic root of 51204323 is about 371.3375572223.

Adding to 51204323 its reverse (32340215), we get a palindrome (83544538).

The spelling of 51204323 in words is "fifty-one million, two hundred four thousand, three hundred twenty-three".