51471789 has 16 divisors (see below), whose sum is σ = 70315392. Its totient is φ = 33481728.

The previous prime is 51471787. The next prime is 51471793. The reversal of 51471789 is 98717415.

51471789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51471789 - 2¹ = 51471787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51471789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51471787) 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 15 ways as a sum of consecutive naturals, for example, 20032 + ... + 22454.

It is an arithmetic number, because the mean of its divisors is an integer number (4394712).

Almost surely, 2^51471789 is an apocalyptic number.

It is an amenable number.

51471789 is a deficient number, since it is larger than the sum of its proper divisors (18843603).

51471789 is a wasteful number, since it uses less digits than its factorization.

51471789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596.

The product of its digits is 70560, while the sum is 42.

The square root of 51471789 is about 7174.3842244474. The cubic root of 51471789 is about 371.9829958119.

The spelling of 51471789 in words is "fifty-one million, four hundred seventy-one thousand, seven hundred eighty-nine".