51171694 has 8 divisors (see below), whose sum is σ = 87722928. Its totient is φ = 21930720.

The previous prime is 51171691. The next prime is 51171709. The reversal of 51171694 is 49617115.

51171694 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (51171691) 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, 1827547 + ... + 1827574.

It is an arithmetic number, because the mean of its divisors is an integer number (10965366).

Almost surely, 2^51171694 is an apocalyptic number.

51171694 is a deficient number, since it is larger than the sum of its proper divisors (36551234).

51171694 is a wasteful number, since it uses less digits than its factorization.

51171694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655130.

The product of its digits is 7560, while the sum is 34.

The square root of 51171694 is about 7153.4393126663. The cubic root of 51171694 is about 371.2586644843.

The spelling of 51171694 in words is "fifty-one million, one hundred seventy-one thousand, six hundred ninety-four".