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87055113 = 3176127983
BaseRepresentation
bin1010011000001…
…01101100001001
320001210212011110
411030011230021
5134241230423
612345520533
72104645665
oct514055411
9201725143
1087055113
114515a882
12251a3149
1315060702
14b7c18a5
157999193
hex5305b09

87055113 has 16 divisors (see below), whose sum is σ = 124920576. Its totient is φ = 53725440.

The previous prime is 87055021. The next prime is 87055121. The reversal of 87055113 is 31155078.

It is not a de Polignac number, because 87055113 - 29 = 87054601 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87055123) 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, 10881 + ... + 17102.

It is an arithmetic number, because the mean of its divisors is an integer number (7807536).

Almost surely, 287055113 is an apocalyptic number.

It is an amenable number.

87055113 is a deficient number, since it is larger than the sum of its proper divisors (37865463).

87055113 is a wasteful number, since it uses less digits than its factorization.

87055113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28064.

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

The square root of 87055113 is about 9330.3329522585. The cubic root of 87055113 is about 443.1983088278.

The spelling of 87055113 in words is "eighty-seven million, fifty-five thousand, one hundred thirteen".

Divisors: 1 3 17 51 61 183 1037 3111 27983 83949 475711 1427133 1706963 5120889 29018371 87055113