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85911 = 374091
BaseRepresentation
bin10100111110010111
311100211220
4110332113
510222121
61501423
7505320
oct247627
9140756
1085911
1159601
1241873
1330147
1423447
151a6c6
hex14f97

85911 has 8 divisors (see below), whose sum is σ = 130944. Its totient is φ = 49080.

The previous prime is 85909. The next prime is 85931. The reversal of 85911 is 11958.

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

It is not a de Polignac number, because 85911 - 21 = 85909 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85931) 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 7 ways as a sum of consecutive naturals, for example, 2025 + ... + 2066.

It is an arithmetic number, because the mean of its divisors is an integer number (16368).

285911 is an apocalyptic number.

85911 is a deficient number, since it is larger than the sum of its proper divisors (45033).

85911 is a wasteful number, since it uses less digits than its factorization.

85911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101.

The product of its digits is 360, while the sum is 24.

The square root of 85911 is about 293.1057829522. The cubic root of 85911 is about 44.1248177625.

It can be divided in two parts, 859 and 11, that multiplied together give a palindrome (9449).

The spelling of 85911 in words is "eighty-five thousand, nine hundred eleven".

Divisors: 1 3 7 21 4091 12273 28637 85911