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51338741 = 194795641
BaseRepresentation
bin1100001111010…
…1110111110101
310120121021111212
43003311313311
5101120314431
65032211205
71162241426
oct303656765
9116537455
1051338741
1126a85613
1215239b05
13a83686c
146b6564d
15479172b
hex30f5df5

51338741 has 8 divisors (see below), whose sum is σ = 54163200. Its totient is φ = 48526560.

The previous prime is 51338731. The next prime is 51338743. The reversal of 51338741 is 14783315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51338741 - 210 = 51337717 is a prime.

It is a super-5 number, since 5×513387415 (a number of 40 digits) contains 55555 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51338698 and 51338707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51338743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6281 + ... + 11921.

It is an arithmetic number, because the mean of its divisors is an integer number (6770400).

Almost surely, 251338741 is an apocalyptic number.

It is an amenable number.

51338741 is a deficient number, since it is larger than the sum of its proper divisors (2824459).

51338741 is a wasteful number, since it uses less digits than its factorization.

51338741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6139.

The product of its digits is 10080, while the sum is 32.

The square root of 51338741 is about 7165.1057912637. The cubic root of 51338741 is about 371.6622097459.

The spelling of 51338741 in words is "fifty-one million, three hundred thirty-eight thousand, seven hundred forty-one".

Divisors: 1 19 479 5641 9101 107179 2702039 51338741