51317694 has 24 divisors (see below), whose sum is σ = 111320352. Its totient is φ = 17085600.

The previous prime is 51317687. The next prime is 51317699. The reversal of 51317694 is 49671315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51317699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27594 + ... + 29394.

It is an arithmetic number, because the mean of its divisors is an integer number (4638348).

Almost surely, 2^51317694 is an apocalyptic number.

51317694 is an abundant number, since it is smaller than the sum of its proper divisors (60002658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51317694 is a wasteful number, since it uses less digits than its factorization.

51317694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392 (or 3389 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 51317694 is about 7163.6369254730. The cubic root of 51317694 is about 371.6114135143.

The spelling of 51317694 in words is "fifty-one million, three hundred seventeen thousand, six hundred ninety-four".