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552108985 = 5547720161
BaseRepresentation
bin100000111010001…
…000001110111001
31102110220001010221
4200322020032321
52112314441420
6130441340041
716452564121
oct4072101671
91373801127
10552108985
1126371871a
12134a97621
138a4cb40c
145347bc81
153370ccaa
hex20e883b9

552108985 has 8 divisors (see below), whose sum is σ = 662684616. Its totient is φ = 441584640.

The previous prime is 552108971. The next prime is 552109007. The reversal of 552108985 is 589801255.

It can be written as a sum of positive squares in 4 ways, for example, as 272283001 + 279825984 = 16501^2 + 16728^2 .

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

It is not a de Polignac number, because 552108985 - 219 = 551584697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17305 + ... + 37465.

It is an arithmetic number, because the mean of its divisors is an integer number (82835577).

Almost surely, 2552108985 is an apocalyptic number.

It is an amenable number.

552108985 is a deficient number, since it is larger than the sum of its proper divisors (110575631).

552108985 is a wasteful number, since it uses less digits than its factorization.

552108985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25643.

The product of its (nonzero) digits is 144000, while the sum is 43.

The square root of 552108985 is about 23496.9994892965. Note that the first 3 decimals coincide. The cubic root of 552108985 is about 820.3671690018.

The spelling of 552108985 in words is "five hundred fifty-two million, one hundred eight thousand, nine hundred eighty-five".

Divisors: 1 5 5477 20161 27385 100805 110421797 552108985