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87305055 = 355820337
BaseRepresentation
bin1010011010000…
…10101101011111
320002021120000120
411031002231133
5134322230210
612355130023
72110036455
oct515025537
9202246016
1087305055
1145310642
12252a3913
131511a3c6
14b8489d5
1579e8270
hex5342b5f

87305055 has 8 divisors (see below), whose sum is σ = 139688112. Its totient is φ = 46562688.

The previous prime is 87305017. The next prime is 87305059. The reversal of 87305055 is 55050378.

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

It is not a de Polignac number, because 87305055 - 28 = 87304799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87305059) 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, 2910154 + ... + 2910183.

It is an arithmetic number, because the mean of its divisors is an integer number (17461014).

Almost surely, 287305055 is an apocalyptic number.

87305055 is a deficient number, since it is larger than the sum of its proper divisors (52383057).

87305055 is a wasteful number, since it uses less digits than its factorization.

87305055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5820345.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 87305055 is about 9343.7174079699. The cubic root of 87305055 is about 443.6220558205.

The spelling of 87305055 in words is "eighty-seven million, three hundred five thousand, fifty-five".

Divisors: 1 3 5 15 5820337 17461011 29101685 87305055