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85102105 = 51112291259
BaseRepresentation
bin1010001001010…
…00111000011001
312221010122010211
411010220320121
5133241231410
612240011121
72052233044
oct504507031
9187118124
1085102105
1144046520
1224600aa1
131482879a
14b433c5b
15771068a
hex5128e19

85102105 has 16 divisors (see below), whose sum is σ = 111585600. Its totient is φ = 61792960.

The previous prime is 85102103. The next prime is 85102123. The reversal of 85102105 is 50120158.

It is not a de Polignac number, because 85102105 - 21 = 85102103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85102103) 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, 66966 + ... + 68224.

It is an arithmetic number, because the mean of its divisors is an integer number (6974100).

Almost surely, 285102105 is an apocalyptic number.

It is an amenable number.

85102105 is a deficient number, since it is larger than the sum of its proper divisors (26483495).

85102105 is a wasteful number, since it uses less digits than its factorization.

85102105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 85102105 is about 9225.0802164534. The cubic root of 85102105 is about 439.8589510015.

The spelling of 85102105 in words is "eighty-five million, one hundred two thousand, one hundred five".

Divisors: 1 5 11 55 1229 1259 6145 6295 13519 13849 67595 69245 1547311 7736555 17020421 85102105