51789244 has 48 divisors (see below), whose sum is σ = 102805920. Its totient is φ = 22659840.

The previous prime is 51789239. The next prime is 51789247. The reversal of 51789244 is 44298715.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 51789197 and 51789206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51789247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91707 + ... + 92269.

It is an arithmetic number, because the mean of its divisors is an integer number (2141790).

Almost surely, 2^51789244 is an apocalyptic number.

It is an amenable number.

51789244 is a deficient number, since it is larger than the sum of its proper divisors (51016676).

51789244 is a wasteful number, since it uses less digits than its factorization.

51789244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 668 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 51789244 is about 7196.4744146005. The cubic root of 51789244 is about 372.7461706280.

The spelling of 51789244 in words is "fifty-one million, seven hundred eighty-nine thousand, two hundred forty-four".