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105104465 = 521020893
BaseRepresentation
bin1100100001111…
…00010001010001
321022202212012222
412100330101101
5203401320330
614232430425
72414242004
oct620742121
9238685188
10105104465
11543685a4
122b248415
1318a0ccbb
14dd5d53b
1593620e5
hex643c451

105104465 has 4 divisors (see below), whose sum is σ = 126125364. Its totient is φ = 84083568.

The previous prime is 105104453. The next prime is 105104473. The reversal of 105104465 is 564401501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564401501 = 678423903.

It can be written as a sum of positive squares in 2 ways, for example, as 38142976 + 66961489 = 6176^2 + 8183^2 .

It is a cyclic number.

It is not a de Polignac number, because 105104465 - 210 = 105103441 is a prime.

It is a super-2 number, since 2×1051044652 = 22093897125872450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 10510442 + ... + 10510451.

It is an arithmetic number, because the mean of its divisors is an integer number (31531341).

Almost surely, 2105104465 is an apocalyptic number.

It is an amenable number.

105104465 is a deficient number, since it is larger than the sum of its proper divisors (21020899).

105104465 is an equidigital number, since it uses as much as digits as its factorization.

105104465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21020898.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 105104465 is about 10252.0468687965. The cubic root of 105104465 is about 471.9258013812.

Adding to 105104465 its reverse (564401501), we get a palindrome (669505966).

The spelling of 105104465 in words is "one hundred five million, one hundred four thousand, four hundred sixty-five".

Divisors: 1 5 21020893 105104465