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51808341 = 3131936883
BaseRepresentation
bin1100010110100…
…0100001010101
310121111010200110
43011220201111
5101230331331
65050233233
71166235504
oct305504125
9117433613
1051808341
1127276412
1215425819
13a96c530
146c4883b
154835946
hex3168855

51808341 has 16 divisors (see below), whose sum is σ = 74787776. Its totient is φ = 31712256.

The previous prime is 51808327. The next prime is 51808349. The reversal of 51808341 is 14380815.

It is not a de Polignac number, because 51808341 - 29 = 51807829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51808299 and 51808308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51808349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4086 + ... + 10968.

It is an arithmetic number, because the mean of its divisors is an integer number (4674236).

Almost surely, 251808341 is an apocalyptic number.

It is an amenable number.

51808341 is a deficient number, since it is larger than the sum of its proper divisors (22979435).

51808341 is a wasteful number, since it uses less digits than its factorization.

51808341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7092.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 51808341 is about 7197.8011225651. The cubic root of 51808341 is about 372.7919810338.

The spelling of 51808341 in words is "fifty-one million, eight hundred eight thousand, three hundred forty-one".

Divisors: 1 3 13 39 193 579 2509 6883 7527 20649 89479 268437 1328419 3985257 17269447 51808341