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13050505 = 513415983
BaseRepresentation
bin110001110010…
…001010001001
3220120000221001
4301302022021
511320104010
61143415001
7215633056
oct61621211
926500831
1013050505
117404046
124454461
13291c1c0
141a3a02d
15122bc3a
hexc72289

13050505 has 32 divisors (see below), whose sum is σ = 17781120. Its totient is φ = 9131520.

The previous prime is 13050503. The next prime is 13050533. The reversal of 13050505 is 50505031.

It is not a de Polignac number, because 13050505 - 21 = 13050503 is a prime.

It is a super-4 number, since 4×130505054 (a number of 30 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (13050503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157194 + ... + 157276.

It is an arithmetic number, because the mean of its divisors is an integer number (555660).

Almost surely, 213050505 is an apocalyptic number.

It is an amenable number.

13050505 is a deficient number, since it is larger than the sum of its proper divisors (4730615).

13050505 is a wasteful number, since it uses less digits than its factorization.

13050505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 13050505 is about 3612.5482695737. The cubic root of 13050505 is about 235.4375731383.

Adding to 13050505 its reverse (50505031), we get a palindrome (63555536).

The spelling of 13050505 in words is "thirteen million, fifty thousand, five hundred five".

Divisors: 1 5 13 41 59 65 83 205 295 415 533 767 1079 2419 2665 3403 3835 4897 5395 12095 17015 24485 31447 44239 63661 157235 200777 221195 318305 1003885 2610101 13050505