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227444101 = 754130161
BaseRepresentation
bin11011000111010…
…00010110000101
3120211222100122121
431203220112011
5431211202401
634322525541
75431146223
oct1543502605
9524870577
10227444101
11107428135
12642068b1
1338175b11
14222c7b13
1514e7aca1
hexd8e8585

227444101 has 4 divisors (see below), whose sum is σ = 227481804. Its totient is φ = 227406400.

The previous prime is 227444099. The next prime is 227444123. The reversal of 227444101 is 101444722.

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 99980001 + 127464100 = 9999^2 + 11290^2 .

It is a 3-Lehmer number, since φ(227444101) divides (227444101-1)3.

It is a cyclic number.

It is not a de Polignac number, because 227444101 - 21 = 227444099 is a prime.

It is a deceptive number, since it divides R227444100.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227444141) 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, 7540 + ... + 22621.

It is an arithmetic number, because the mean of its divisors is an integer number (56870451).

It is a Poulet number, since it divides 2227444100-1.

Almost surely, 2227444101 is an apocalyptic number.

227444101 is the 7541-st decagonal number.

It is an amenable number.

227444101 is a deficient number, since it is larger than the sum of its proper divisors (37703).

227444101 is an equidigital number, since it uses as much as digits as its factorization.

227444101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37702.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 227444101 is about 15081.2499813510. The cubic root of 227444101 is about 610.4145717165.

Adding to 227444101 its reverse (101444722), we get a palindrome (328888823).

The spelling of 227444101 in words is "two hundred twenty-seven million, four hundred forty-four thousand, one hundred one".

Divisors: 1 7541 30161 227444101