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1000165 = 5200033
BaseRepresentation
bin11110100001011100101
31212210222011
43310023211
5224001130
633234221
711333635
oct3641345
91783864
101000165
11623491
12402971
1329031a
141c06c5
1514b52a
hexf42e5

1000165 has 4 divisors (see below), whose sum is σ = 1200204. Its totient is φ = 800128.

The previous prime is 1000159. The next prime is 1000171. The reversal of 1000165 is 5610001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5610001 = 11294969.

It is an interprime number because it is at equal distance from previous prime (1000159) and next prime (1000171).

It can be written as a sum of positive squares in 2 ways, for example, as 568516 + 431649 = 754^2 + 657^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000165 - 25 = 1000133 is a prime.

It is a Smith number, since the sum of its digits (13) 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.

1000165 is a modest number, since divided by 165 gives 100 as remainder.

It is a congruent 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, 100012 + ... + 100021.

It is an arithmetic number, because the mean of its divisors is an integer number (300051).

21000165 is an apocalyptic number.

It is an amenable number.

1000165 is a deficient number, since it is larger than the sum of its proper divisors (200039).

1000165 is an equidigital number, since it uses as much as digits as its factorization.

1000165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200038.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1000165 is about 1000.0824965972. The cubic root of 1000165 is about 100.0054996975.

Adding to 1000165 its reverse (5610001), we get a palindrome (6610166).

The spelling of 1000165 in words is "one million, one hundred sixty-five", and thus it is an aban number.

Divisors: 1 5 200033 1000165