51668104 has 8 divisors (see below), whose sum is σ = 96877710. Its totient is φ = 25834048.

The previous prime is 51668063. The next prime is 51668119. The reversal of 51668104 is 40186615.

It can be written as a sum of positive squares in only one way, i.e., 49702500 + 1965604 = 7050^2 + 1402^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3229249 + ... + 3229264.

Almost surely, 2^51668104 is an apocalyptic number.

It is an amenable number.

51668104 is a deficient number, since it is larger than the sum of its proper divisors (45209606).

51668104 is a wasteful number, since it uses less digits than its factorization.

51668104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6458519 (or 6458515 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 51668104 is about 7188.0528656932. The cubic root of 51668104 is about 372.4553140696.

The spelling of 51668104 in words is "fifty-one million, six hundred sixty-eight thousand, one hundred four".