51317327 has 4 divisors (see below), whose sum is σ = 53086920. Its totient is φ = 49547736.

The previous prime is 51317293. The next prime is 51317341. The reversal of 51317327 is 72371315.

51317327 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51317327 - 2¹² = 51313231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1769563 = 51317327 / (5 + 1 + 3 + 1 + 7 + 3 + 2 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51317327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51317027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884753 + ... + 884810.

It is an arithmetic number, because the mean of its divisors is an integer number (13271730).

Almost surely, 2^51317327 is an apocalyptic number.

51317327 is a deficient number, since it is larger than the sum of its proper divisors (1769593).

51317327 is a wasteful number, since it uses less digits than its factorization.

51317327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769592.

The product of its digits is 4410, while the sum is 29.

The square root of 51317327 is about 7163.6113099470. The cubic root of 51317327 is about 371.6105276489.

It can be divided in two parts, 5 and 1317327, that multiplied together give a triangular number (6586635 = T₃₆₂₉).

The spelling of 51317327 in words is "fifty-one million, three hundred seventeen thousand, three hundred twenty-seven".