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8104961 = 37219053
BaseRepresentation
bin11110111010110000000001
3120020202220202
4132322300001
54033324321
6445414545
7125614424
oct36726001
916222822
108104961
114636417
12286a455
1318aa147
14110d9bb
15aa170b
hex7bac01

8104961 has 4 divisors (see below), whose sum is σ = 8324052. Its totient is φ = 7885872.

The previous prime is 8104933. The next prime is 8104991. The reversal of 8104961 is 1694018.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1694018 = 2847009.

It can be written as a sum of positive squares in 2 ways, for example, as 4752400 + 3352561 = 2180^2 + 1831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8104961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8104991) by changing a digit.

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, 109490 + ... + 109563.

It is an arithmetic number, because the mean of its divisors is an integer number (2081013).

Almost surely, 28104961 is an apocalyptic number.

It is an amenable number.

8104961 is a deficient number, since it is larger than the sum of its proper divisors (219091).

8104961 is a wasteful number, since it uses less digits than its factorization.

8104961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219090.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 8104961 is about 2846.9213196012. The cubic root of 8104961 is about 200.8708773590.

Adding to 8104961 its reverse (1694018), we get a palindrome (9798979).

The spelling of 8104961 in words is "eight million, one hundred four thousand, nine hundred sixty-one".

Divisors: 1 37 219053 8104961