51616807 has 8 divisors (see below), whose sum is σ = 58757760. Its totient is φ = 44883960.

The previous prime is 51616801. The next prime is 51616843. The reversal of 51616807 is 70861615.

51616807 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 not a de Polignac number, because 51616807 - 2⁷ = 51616679 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 (51616801) 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 7 ways as a sum of consecutive naturals, for example, 101757 + ... + 102262.

It is an arithmetic number, because the mean of its divisors is an integer number (7344720).

Almost surely, 2^51616807 is an apocalyptic number.

51616807 is a deficient number, since it is larger than the sum of its proper divisors (7140953).

51616807 is a wasteful number, since it uses less digits than its factorization.

51616807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204053.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 51616807 is about 7184.4837671192. The cubic root of 51616807 is about 372.3320131991.

The spelling of 51616807 in words is "fifty-one million, six hundred sixteen thousand, eight hundred seven".