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13050517 = 70118617
BaseRepresentation
bin110001110010…
…001010010101
3220120000221111
4301302022111
511320104032
61143415021
7215633104
oct61621225
926500844
1013050517
117404057
124454471
13291c1cc
141a3a03b
15122bc47
hexc72295

13050517 has 4 divisors (see below), whose sum is σ = 13069836. Its totient is φ = 13031200.

The previous prime is 13050503. The next prime is 13050533. The reversal of 13050517 is 71505031.

13050517 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71505031 = 135500387.

It can be written as a sum of positive squares in 2 ways, for example, as 12117361 + 933156 = 3481^2 + 966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13050517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13050617) 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, 8608 + ... + 10009.

It is an arithmetic number, because the mean of its divisors is an integer number (3267459).

Almost surely, 213050517 is an apocalyptic number.

It is an amenable number.

13050517 is a deficient number, since it is larger than the sum of its proper divisors (19319).

13050517 is an equidigital number, since it uses as much as digits as its factorization.

13050517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19318.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 13050517 is about 3612.5499304508. The cubic root of 13050517 is about 235.4376453003.

Adding to 13050517 its reverse (71505031), we get a palindrome (84555548).

The spelling of 13050517 in words is "thirteen million, fifty thousand, five hundred seventeen".

Divisors: 1 701 18617 13050517