51339727 has 2 divisors, whose sum is σ = 51339728. Its totient is φ = 51339726.

The previous prime is 51339709. The next prime is 51339781. The reversal of 51339727 is 72793315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51339727 - 2¹⁹ = 50815439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51339707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25669863 + 25669864.

It is an arithmetic number, because the mean of its divisors is an integer number (25669864).

Almost surely, 2^51339727 is an apocalyptic number.

51339727 is a deficient number, since it is larger than the sum of its proper divisors (1).

51339727 is an equidigital number, since it uses as much as digits as its factorization.

51339727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39690, while the sum is 37.

The square root of 51339727 is about 7165.1745966166. The cubic root of 51339727 is about 371.6645890835.

The spelling of 51339727 in words is "fifty-one million, three hundred thirty-nine thousand, seven hundred twenty-seven".