51338769 has 8 divisors (see below), whose sum is σ = 68974752. Its totient is φ = 33964320.

The previous prime is 51338767. The next prime is 51338773. The reversal of 51338769 is 96783315.

51338769 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 51338769 - 2¹ = 51338767 is a prime.

It is a super-2 number, since 2×51338769² = 5271338404870722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51338769.

It is not an unprimeable number, because it can be changed into a prime (51338767) 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, 64924 + ... + 65709.

It is an arithmetic number, because the mean of its divisors is an integer number (8621844).

Almost surely, 2^51338769 is an apocalyptic number.

It is an amenable number.

51338769 is a deficient number, since it is larger than the sum of its proper divisors (17635983).

51338769 is a wasteful number, since it uses less digits than its factorization.

51338769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130767.

The product of its digits is 136080, while the sum is 42.

The square root of 51338769 is about 7165.1077451773. The cubic root of 51338769 is about 371.6622773137.

The spelling of 51338769 in words is "fifty-one million, three hundred thirty-eight thousand, seven hundred sixty-nine".