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103905355 = 520781071
BaseRepresentation
bin1100011000101…
…11100001001011
321020111221100111
412030113201023
5203044432410
614151015151
72401116031
oct614274113
9236457314
10103905355
11537196a4
122a96a4b7
13186b0278
14db2a551
1591c6b8a
hex631784b

103905355 has 4 divisors (see below), whose sum is σ = 124686432. Its totient is φ = 83124280.

The previous prime is 103905349. The next prime is 103905413. The reversal of 103905355 is 553509301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553509301 = 670182601.

It is not a de Polignac number, because 103905355 - 25 = 103905323 is a prime.

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 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 3 ways as a sum of consecutive naturals, for example, 10390531 + ... + 10390540.

It is an arithmetic number, because the mean of its divisors is an integer number (31171608).

Almost surely, 2103905355 is an apocalyptic number.

103905355 is a deficient number, since it is larger than the sum of its proper divisors (20781077).

103905355 is an equidigital number, since it uses as much as digits as its factorization.

103905355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20781076.

The product of its (nonzero) digits is 10125, while the sum is 31.

The square root of 103905355 is about 10193.3976180663. The cubic root of 103905355 is about 470.1242390739.

The spelling of 103905355 in words is "one hundred three million, nine hundred five thousand, three hundred fifty-five".

Divisors: 1 5 20781071 103905355