51305329 has 2 divisors, whose sum is σ = 51305330. Its totient is φ = 51305328.

The previous prime is 51305327. The next prime is 51305351. The reversal of 51305329 is 92350315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49280400 + 2024929 = 7020^2 + 1423^2 .

It is a cyclic number.

It is not a de Polignac number, because 51305329 - 2¹ = 51305327 is a prime.

Together with 51305327, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 51305297 and 51305306.

It is not a weakly prime, because it can be changed into another prime (51305327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25652664 + 25652665.

It is an arithmetic number, because the mean of its divisors is an integer number (25652665).

Almost surely, 2^51305329 is an apocalyptic number.

It is an amenable number.

51305329 is a deficient number, since it is larger than the sum of its proper divisors (1).

51305329 is an equidigital number, since it uses as much as digits as its factorization.

51305329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 51305329 is about 7162.7738342070. The cubic root of 51305329 is about 371.5815645228.

The spelling of 51305329 in words is "fifty-one million, three hundred five thousand, three hundred twenty-nine".