51696807 has 16 divisors (see below), whose sum is σ = 71601120. Its totient is φ = 33149952.

The previous prime is 51696797. The next prime is 51696823. The reversal of 51696807 is 70869615.

51696807 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 51696807 - 2⁸ = 51696551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51696857) 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, 7263 + ... + 12495.

It is an arithmetic number, because the mean of its divisors is an integer number (4475070).

Almost surely, 2^51696807 is an apocalyptic number.

51696807 is a deficient number, since it is larger than the sum of its proper divisors (19904313).

51696807 is a wasteful number, since it uses less digits than its factorization.

51696807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5362.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 51696807 is about 7190.0491653396. The cubic root of 51696807 is about 372.5242708988.

The spelling of 51696807 in words is "fifty-one million, six hundred ninety-six thousand, eight hundred seven".