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87361105 = 5131344017
BaseRepresentation
bin1010011010100…
…00011001010001
320002101101220111
411031100121101
5134331023410
612400241321
72110362046
oct515203121
9202341814
1087361105
1145349767
1225310241
1315139a80
14b8611cd
157a09b8a
hex5350651

87361105 has 8 divisors (see below), whose sum is σ = 112897512. Its totient is φ = 64512768.

The previous prime is 87361097. The next prime is 87361111. The reversal of 87361105 is 50116378.

It can be written as a sum of positive squares in 4 ways, for example, as 1817104 + 85544001 = 1348^2 + 9249^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 87361105 - 23 = 87361097 is a prime.

It is an unprimeable number.

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, 671944 + ... + 672073.

It is an arithmetic number, because the mean of its divisors is an integer number (14112189).

Almost surely, 287361105 is an apocalyptic number.

It is an amenable number.

87361105 is a deficient number, since it is larger than the sum of its proper divisors (25536407).

87361105 is a wasteful number, since it uses less digits than its factorization.

87361105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344035.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 87361105 is about 9346.7162682944. The cubic root of 87361105 is about 443.7169708935.

The spelling of 87361105 in words is "eighty-seven million, three hundred sixty-one thousand, one hundred five".

Divisors: 1 5 13 65 1344017 6720085 17472221 87361105