51307 has 2 divisors, whose sum is σ = 51308.
Its totient is φ = 51306.
The previous prime is 51287. The next prime is 51329. The reversal of 51307 is 70315.
51307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 51307 - 215 = 18539 is a prime.
It is a plaindrome in base 14.
It is not a weakly prime, because it can be changed into another prime (51347) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25653 + 25654.
It is an arithmetic number, because the mean of its divisors is an integer number (25654).
251307 is an apocalyptic number.
51307 is a deficient number, since it is larger than the sum of its proper divisors (1).
51307 is an equidigital number, since it uses as much as digits as its factorization.
51307 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 105, while the sum is 16.
The square root of 51307 is about 226.5104854085.
The cubic root of 51307 is about 37.1585598581.
The spelling of 51307 in words is "fifty-one thousand, three hundred seven".