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107214565 = 521442913
BaseRepresentation
bin1100110001111…
…11011011100101
321110202001201211
412120333123211
5204421331230
614345551421
72441210623
oct630773345
9243661654
10107214565
1155579987
122baa5571
131929b593
141034c513
15962c42a
hex663f6e5

107214565 has 4 divisors (see below), whose sum is σ = 128657484. Its totient is φ = 85771648.

The previous prime is 107214559. The next prime is 107214577. The reversal of 107214565 is 565412701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565412701 = 780773243.

It can be written as a sum of positive squares in 2 ways, for example, as 31158724 + 76055841 = 5582^2 + 8721^2 .

It is a cyclic number.

It is not a de Polignac number, because 107214565 - 23 = 107214557 is a prime.

It is a super-2 number, since 2×1072145652 = 22989925896278450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10721452 + ... + 10721461.

It is an arithmetic number, because the mean of its divisors is an integer number (32164371).

Almost surely, 2107214565 is an apocalyptic number.

It is an amenable number.

107214565 is a deficient number, since it is larger than the sum of its proper divisors (21442919).

107214565 is an equidigital number, since it uses as much as digits as its factorization.

107214565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21442918.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 107214565 is about 10354.4466293472. The cubic root of 107214565 is about 475.0630608798.

The spelling of 107214565 in words is "one hundred seven million, two hundred fourteen thousand, five hundred sixty-five".

Divisors: 1 5 21442913 107214565