51432866 has 8 divisors (see below), whose sum is σ = 77298384. Its totient is φ = 25666740.

The previous prime is 51432847. The next prime is 51432877. The reversal of 51432866 is 66823415.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23540 + ... + 25631.

It is an arithmetic number, because the mean of its divisors is an integer number (9662298).

Almost surely, 2^51432866 is an apocalyptic number.

51432866 is a deficient number, since it is larger than the sum of its proper divisors (25865518).

51432866 is a wasteful number, since it uses less digits than its factorization.

51432866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49696.

The product of its digits is 34560, while the sum is 35.

The square root of 51432866 is about 7171.6710744428. The cubic root of 51432866 is about 371.8892075734.

The spelling of 51432866 in words is "fifty-one million, four hundred thirty-two thousand, eight hundred sixty-six".