51706868 has 12 divisors (see below), whose sum is σ = 90717732. Its totient is φ = 25787520.

The previous prime is 51706861. The next prime is 51706873. The reversal of 51706868 is 86860715.

It can be written as a sum of positive squares in 2 ways, for example, as 37478884 + 14227984 = 6122^2 + 3772^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51706861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14693 + ... + 17868.

It is an arithmetic number, because the mean of its divisors is an integer number (7559811).

Almost surely, 2^51706868 is an apocalyptic number.

It is an amenable number.

51706868 is a deficient number, since it is larger than the sum of its proper divisors (39010864).

51706868 is a wasteful number, since it uses less digits than its factorization.

51706868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32962 (or 32960 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 51706868 is about 7190.7487788130. The cubic root of 51706868 is about 372.5484356638.

The spelling of 51706868 in words is "fifty-one million, seven hundred six thousand, eight hundred sixty-eight".