51065646 has 16 divisors (see below), whose sum is σ = 102207744. Its totient is φ = 17009144.

The previous prime is 51065629. The next prime is 51065653. The reversal of 51065646 is 64656015.

51065646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 9211 + ... + 13673.

It is an arithmetic number, because the mean of its divisors is an integer number (6387984).

Almost surely, 2^51065646 is an apocalyptic number.

51065646 is an abundant number, since it is smaller than the sum of its proper divisors (51142098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51065646 is a wasteful number, since it uses less digits than its factorization.

51065646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6375.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 51065646 is about 7146.0230898032. The cubic root of 51065646 is about 371.0020221578.

The spelling of 51065646 in words is "fifty-one million, sixty-five thousand, six hundred forty-six".