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14000521 = 67208963
BaseRepresentation
bin110101011010…
…000110001001
3222100022002211
4311122012021
512041004041
61220025121
7230000563
oct65320611
928308084
1014000521
1179a2887
1248321a1
132b92742
141c06333
151368481
hexd5a189

14000521 has 4 divisors (see below), whose sum is σ = 14209552. Its totient is φ = 13791492.

The previous prime is 14000509. The next prime is 14000527. The reversal of 14000521 is 12500041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12500041 = 18169061.

It is a cyclic number.

It is not a de Polignac number, because 14000521 - 219 = 13476233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14000527) 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, 104415 + ... + 104548.

It is an arithmetic number, because the mean of its divisors is an integer number (3552388).

Almost surely, 214000521 is an apocalyptic number.

It is an amenable number.

14000521 is a deficient number, since it is larger than the sum of its proper divisors (209031).

14000521 is an equidigital number, since it uses as much as digits as its factorization.

14000521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209030.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 14000521 is about 3741.7270076797. The cubic root of 14000521 is about 241.0172161045.

Adding to 14000521 its reverse (12500041), we get a palindrome (26500562).

The spelling of 14000521 in words is "fourteen million, five hundred twenty-one", and thus it is an aban number.

Divisors: 1 67 208963 14000521