51793687 has 6 divisors (see below), whose sum is σ = 56930384. Its totient is φ = 47085060.

The previous prime is 51793669. The next prime is 51793711. The reversal of 51793687 is 78639715.

It is not a de Polignac number, because 51793687 - 2⁷ = 51793559 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 (51793607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213903 + ... + 214144.

Almost surely, 2^51793687 is an apocalyptic number.

51793687 is a deficient number, since it is larger than the sum of its proper divisors (5136697).

51793687 is a wasteful number, since it uses less digits than its factorization.

51793687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428069 (or 428058 counting only the distinct ones).

The product of its digits is 317520, while the sum is 46.

The square root of 51793687 is about 7196.7831008027. The cubic root of 51793687 is about 372.7568296230.

The spelling of 51793687 in words is "fifty-one million, seven hundred ninety-three thousand, six hundred eighty-seven".