51668602 has 8 divisors (see below), whose sum is σ = 78302196. Its totient is φ = 25567872.

The previous prime is 51668567. The next prime is 51668621. The reversal of 51668602 is 20686615.

51668602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 44903401 + 6765201 = 6701^2 + 2601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 132973 + ... + 133360.

Almost surely, 2^51668602 is an apocalyptic number.

51668602 is a deficient number, since it is larger than the sum of its proper divisors (26633594).

51668602 is a wasteful number, since it uses less digits than its factorization.

51668602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266432.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 51668602 is about 7188.0875064234. The cubic root of 51668602 is about 372.4565106954.

The spelling of 51668602 in words is "fifty-one million, six hundred sixty-eight thousand, six hundred two".