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105801227 = 715114461
BaseRepresentation
bin1100100111001…
…10011000001011
321101002020222222
412103212120023
5204041114402
614255404255
72423203250
oct623463013
9241066888
10105801227
11547a4034
122b52368b
1318bc519c
14100a1427
15944d7a2
hex64e660b

105801227 has 4 divisors (see below), whose sum is σ = 120915696. Its totient is φ = 90686760.

The previous prime is 105801221. The next prime is 105801239. The reversal of 105801227 is 722108501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722108501 = 1674324003.

It is a cyclic number.

It is not a de Polignac number, because 105801227 - 216 = 105735691 is a prime.

It is a super-2 number, since 2×1058012272 = 22387799269411058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105801196 and 105801205.

It is not an unprimeable number, because it can be changed into a prime (105801221) by changing a digit.

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, 7557224 + ... + 7557237.

It is an arithmetic number, because the mean of its divisors is an integer number (30228924).

Almost surely, 2105801227 is an apocalyptic number.

105801227 is a deficient number, since it is larger than the sum of its proper divisors (15114469).

105801227 is an equidigital number, since it uses as much as digits as its factorization.

105801227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15114468.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 105801227 is about 10285.9723410089. The cubic root of 105801227 is about 472.9663408147.

Adding to 105801227 its reverse (722108501), we get a palindrome (827909728).

The spelling of 105801227 in words is "one hundred five million, eight hundred one thousand, two hundred twenty-seven".

Divisors: 1 7 15114461 105801227