51739344 has 80 divisors (see below), whose sum is σ = 149444800. Its totient is φ = 17138304.

The previous prime is 51739327. The next prime is 51739361. The reversal of 51739344 is 44393715.

51739344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51739327) and next prime (51739361).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 51739299 and 51739308.

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 15 ways as a sum of consecutive naturals, for example, 98667 + ... + 99189.

It is an arithmetic number, because the mean of its divisors is an integer number (1868060).

Almost surely, 2^51739344 is an apocalyptic number.

51739344 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51739344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74722400).

51739344 is an abundant number, since it is smaller than the sum of its proper divisors (97705456).

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

51739344 is a wasteful number, since it uses less digits than its factorization.

51739344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 757 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 51739344 is about 7193.0066036394. The cubic root of 51739344 is about 372.6264159614.

The spelling of 51739344 in words is "fifty-one million, seven hundred thirty-nine thousand, three hundred forty-four".