51432679 has 4 divisors (see below), whose sum is σ = 51509776. Its totient is φ = 51355584.

The previous prime is 51432673. The next prime is 51432683. The reversal of 51432679 is 97623415.

51432679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51432679 - 2⁷ = 51432551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51432673) by changing a digit.

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, 37539 + ... + 38884.

It is an arithmetic number, because the mean of its divisors is an integer number (12877444).

Almost surely, 2^51432679 is an apocalyptic number.

51432679 is a deficient number, since it is larger than the sum of its proper divisors (77097).

51432679 is an equidigital number, since it uses as much as digits as its factorization.

51432679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77096.

The product of its digits is 45360, while the sum is 37.

The square root of 51432679 is about 7171.6580370232. The cubic root of 51432679 is about 371.8887568670. Note that the first 3 decimals are identical.

The spelling of 51432679 in words is "fifty-one million, four hundred thirty-two thousand, six hundred seventy-nine".