51043666 has 8 divisors (see below), whose sum is σ = 78346224. Its totient is φ = 24928260.

The previous prime is 51043651. The next prime is 51043687. The reversal of 51043666 is 66634015.

51043666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 296680 + ... + 296851.

It is an arithmetic number, because the mean of its divisors is an integer number (9793278).

Almost surely, 2^51043666 is an apocalyptic number.

51043666 is a deficient number, since it is larger than the sum of its proper divisors (27302558).

51043666 is a wasteful number, since it uses less digits than its factorization.

51043666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593576.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 51043666 is about 7144.4850059329. The cubic root of 51043666 is about 370.9487848358.

The spelling of 51043666 in words is "fifty-one million, forty-three thousand, six hundred sixty-six".