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85103751 = 31743151257
BaseRepresentation
bin1010001001010…
…01010010000111
312221010201101210
411010221102013
5133241310001
612240022503
72052240615
oct504512207
9187121353
1085103751
1144047787
1224601a33
1314829465
14b4346b5
157710dd6
hex5129487

85103751 has 32 divisors (see below), whose sum is σ = 124236288. Its totient is φ = 51609600.

The previous prime is 85103747. The next prime is 85103779. The reversal of 85103751 is 15730158.

It is not a de Polignac number, because 85103751 - 22 = 85103747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85103791) 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 31 ways as a sum of consecutive naturals, for example, 331015 + ... + 331271.

It is an arithmetic number, because the mean of its divisors is an integer number (3882384).

Almost surely, 285103751 is an apocalyptic number.

85103751 is a deficient number, since it is larger than the sum of its proper divisors (39132537).

85103751 is a wasteful number, since it uses less digits than its factorization.

85103751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 85103751 is about 9225.1694293384. The cubic root of 85103751 is about 439.8617868231.

The spelling of 85103751 in words is "eighty-five million, one hundred three thousand, seven hundred fifty-one".

Divisors: 1 3 17 43 51 129 151 257 453 731 771 2193 2567 4369 6493 7701 11051 13107 19479 33153 38807 110381 116421 187867 331143 563601 659719 1668701 1979157 5006103 28367917 85103751