51120323 has 2 divisors, whose sum is σ = 51120324. Its totient is φ = 51120322.

The previous prime is 51120319. The next prime is 51120331. The reversal of 51120323 is 32302115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51120323 - 2² = 51120319 is a prime.

It is a super-2 number, since 2×51120323² = 5226574847248658, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51120353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25560161 + 25560162.

It is an arithmetic number, because the mean of its divisors is an integer number (25560162).

Almost surely, 2^51120323 is an apocalyptic number.

51120323 is a deficient number, since it is larger than the sum of its proper divisors (1).

51120323 is an equidigital number, since it uses as much as digits as its factorization.

51120323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 51120323 is about 7149.8477606170. The cubic root of 51120323 is about 371.1343880013.

Adding to 51120323 its reverse (32302115), we get a palindrome (83422438).

The spelling of 51120323 in words is "fifty-one million, one hundred twenty thousand, three hundred twenty-three".