51304979 has 4 divisors (see below), whose sum is σ = 55969080. Its totient is φ = 46640880.

The previous prime is 51304961. The next prime is 51305011. The reversal of 51304979 is 97940315.

It is a happy number.

51304979 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 not a de Polignac number, because 51304979 - 2¹⁶ = 51239443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51304909) 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, 2332034 + ... + 2332055.

It is an arithmetic number, because the mean of its divisors is an integer number (13992270).

Almost surely, 2^51304979 is an apocalyptic number.

51304979 is a deficient number, since it is larger than the sum of its proper divisors (4664101).

51304979 is a wasteful number, since it uses less digits than its factorization.

51304979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664100.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 51304979 is about 7162.7494022896. The cubic root of 51304979 is about 371.5807195564.

The spelling of 51304979 in words is "fifty-one million, three hundred four thousand, nine hundred seventy-nine".