51020323 has 2 divisors, whose sum is σ = 51020324. Its totient is φ = 51020322.

The previous prime is 51020303. The next prime is 51020341. The reversal of 51020323 is 32302015.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51020323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51020297 and 51020306.

It is not a weakly prime, because it can be changed into another prime (51020303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25510161 + 25510162.

It is an arithmetic number, because the mean of its divisors is an integer number (25510162).

Almost surely, 2^51020323 is an apocalyptic number.

51020323 is a deficient number, since it is larger than the sum of its proper divisors (1).

51020323 is an equidigital number, since it uses as much as digits as its factorization.

51020323 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 16.

The square root of 51020323 is about 7142.8511814261. The cubic root of 51020323 is about 370.8922294818.

Adding to 51020323 its reverse (32302015), we get a palindrome (83322338).

The spelling of 51020323 in words is "fifty-one million, twenty thousand, three hundred twenty-three".