51071311 has 8 divisors (see below), whose sum is σ = 52400880. Its totient is φ = 49758912.

The previous prime is 51071303. The next prime is 51071329. The reversal of 51071311 is 11317015.

51071311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51071311 - 2³ = 51071303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51071341) 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 7 ways as a sum of consecutive naturals, for example, 1845 + ... + 10273.

It is an arithmetic number, because the mean of its divisors is an integer number (6550110).

Almost surely, 2^51071311 is an apocalyptic number.

51071311 is a deficient number, since it is larger than the sum of its proper divisors (1329569).

51071311 is an equidigital number, since it uses as much as digits as its factorization.

51071311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8585.

The product of its (nonzero) digits is 105, while the sum is 19.

The square root of 51071311 is about 7146.4194531248. The cubic root of 51071311 is about 371.0157407658.

Adding to 51071311 its reverse (11317015), we get a palindrome (62388326).

The spelling of 51071311 in words is "fifty-one million, seventy-one thousand, three hundred eleven".