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101056105 = 520211221
BaseRepresentation
bin1100000010111…
…11111001101001
321001011011220201
412001133321221
5201332243410
614005552201
72334651133
oct601377151
9231134821
10101056105
1152052a47
1229a15661
1317c23417
14d5c8053
158d1283a
hex605fe69

101056105 has 4 divisors (see below), whose sum is σ = 121267332. Its totient is φ = 80844880.

The previous prime is 101056093. The next prime is 101056133. The reversal of 101056105 is 501650101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75290329 + 25765776 = 8677^2 + 5076^2 .

It is not a de Polignac number, because 101056105 - 213 = 101047913 is a prime.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10105606 + ... + 10105615.

It is an arithmetic number, because the mean of its divisors is an integer number (30316833).

Almost surely, 2101056105 is an apocalyptic number.

It is an amenable number.

101056105 is a deficient number, since it is larger than the sum of its proper divisors (20211227).

101056105 is an equidigital number, since it uses as much as digits as its factorization.

101056105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20211226.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 101056105 is about 10052.6665616641. Note that the first 3 decimals coincide. The cubic root of 101056105 is about 465.7871663425.

The spelling of 101056105 in words is "one hundred one million, fifty-six thousand, one hundred five".

Divisors: 1 5 20211221 101056105