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87141085 = 529600973
BaseRepresentation
bin1010011000110…
…10101011011101
320001222020002121
411030122223131
5134302003320
612351422541
72105454433
oct514325335
9201866077
1087141085
1145209429
1225224a51
1315090895
14b804d53
1579b48aa
hex531aadd

87141085 has 8 divisors (see below), whose sum is σ = 108175320. Its totient is φ = 67308864.

The previous prime is 87141079. The next prime is 87141097. The reversal of 87141085 is 58014178.

It can be written as a sum of positive squares in 4 ways, for example, as 7806436 + 79334649 = 2794^2 + 8907^2 .

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 87141085 - 211 = 87139037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87141085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300342 + ... + 300631.

It is an arithmetic number, because the mean of its divisors is an integer number (13521915).

Almost surely, 287141085 is an apocalyptic number.

It is an amenable number.

87141085 is a deficient number, since it is larger than the sum of its proper divisors (21034235).

87141085 is a wasteful number, since it uses less digits than its factorization.

87141085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601007.

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

The square root of 87141085 is about 9334.9389392754. The cubic root of 87141085 is about 443.3441555514.

The spelling of 87141085 in words is "eighty-seven million, one hundred forty-one thousand, eighty-five".

Divisors: 1 5 29 145 600973 3004865 17428217 87141085