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51803080 = 23571710883
BaseRepresentation
bin1100010110011…
…1001111001000
310121110212110121
43011213033020
5101230144310
65050153024
71166214250
oct305471710
9117425417
1051803080
112727246a
1215422774
13a96a014
146c46960
1548340da
hex31673c8

51803080 has 64 divisors (see below), whose sum is σ = 141056640. Its totient is φ = 16714752.

The previous prime is 51803053. The next prime is 51803099. The reversal of 51803080 is 8030815.

51803080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 682 + ... + 10201.

It is an arithmetic number, because the mean of its divisors is an integer number (2204010).

Almost surely, 251803080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51803080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70528320).

51803080 is an abundant number, since it is smaller than the sum of its proper divisors (89253560).

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

51803080 is a wasteful number, since it uses less digits than its factorization.

51803080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10918 (or 10914 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 51803080 is about 7197.4356544536. The cubic root of 51803080 is about 372.7793619268.

Adding to 51803080 its reverse (8030815), we get a palindrome (59833895).

The spelling of 51803080 in words is "fifty-one million, eight hundred three thousand, eighty".

Divisors: 1 2 4 5 7 8 10 14 17 20 28 34 35 40 56 68 70 85 119 136 140 170 238 280 340 476 595 680 952 1190 2380 4760 10883 21766 43532 54415 76181 87064 108830 152362 185011 217660 304724 370022 380905 435320 609448 740044 761810 925055 1295077 1480088 1523620 1850110 2590154 3047240 3700220 5180308 6475385 7400440 10360616 12950770 25901540 51803080