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85478101 = 479711873
BaseRepresentation
bin1010001100001…
…00101011010101
312221211201220121
411012010223111
5133340244401
612252031541
72055360202
oct506045325
9187751817
1085478101
1144282a65
12247625b1
131492a977
14b4d0ca9
157786ca1
hex5184ad5

85478101 has 8 divisors (see below), whose sum is σ = 87433344. Its totient is φ = 83528640.

The previous prime is 85478087. The next prime is 85478119. The reversal of 85478101 is 10187458.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-85478101 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85478161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44701 + ... + 46573.

It is an arithmetic number, because the mean of its divisors is an integer number (10929168).

Almost surely, 285478101 is an apocalyptic number.

It is an amenable number.

85478101 is a deficient number, since it is larger than the sum of its proper divisors (1955243).

85478101 is a wasteful number, since it uses less digits than its factorization.

85478101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 85478101 is about 9245.4367663188. The cubic root of 85478101 is about 440.5057906039.

The spelling of 85478101 in words is "eighty-five million, four hundred seventy-eight thousand, one hundred one".

Divisors: 1 47 971 1873 45637 88031 1818683 85478101