51217323 has 8 divisors (see below), whose sum is σ = 69955536. Its totient is φ = 33312000.

The previous prime is 51217289. The next prime is 51217333. The reversal of 51217323 is 32371215.

51217323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51217323 - 2⁶ = 51217259 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 51217293 and 51217302.

It is not an unprimeable number, because it can be changed into a prime (51217333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208078 + ... + 208323.

It is an arithmetic number, because the mean of its divisors is an integer number (8744442).

Almost surely, 2^51217323 is an apocalyptic number.

51217323 is a deficient number, since it is larger than the sum of its proper divisors (18738213).

51217323 is a wasteful number, since it uses less digits than its factorization.

51217323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416445.

The product of its digits is 1260, while the sum is 24.

The square root of 51217323 is about 7156.6279070523. The cubic root of 51217323 is about 371.3689802186.

Adding to 51217323 its reverse (32371215), we get a palindrome (83588538).

It can be divided in two parts, 5121732 and 3, that multiplied together give a triangular number (15365196 = T₅₅₄₃).

The spelling of 51217323 in words is "fifty-one million, two hundred seventeen thousand, three hundred twenty-three".