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13015055 = 52989759
BaseRepresentation
bin110001101001…
…100000001111
3220111020022002
4301221200033
511312440210
61142542515
7215424524
oct61514017
926436262
1013015055
11738a449
124437a3b
132909021
141a2b14b
1512214a5
hexc6980f

13015055 has 8 divisors (see below), whose sum is σ = 16156800. Its totient is φ = 10052896.

The previous prime is 13015049. The next prime is 13015073. The reversal of 13015055 is 55051031.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13015055 - 218 = 12752911 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 44735 + ... + 45024.

It is an arithmetic number, because the mean of its divisors is an integer number (2019600).

Almost surely, 213015055 is an apocalyptic number.

13015055 is a deficient number, since it is larger than the sum of its proper divisors (3141745).

13015055 is an equidigital number, since it uses as much as digits as its factorization.

13015055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89793.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 13015055 is about 3607.6384242327. The cubic root of 13015055 is about 235.2242013040.

Adding to 13015055 its reverse (55051031), we get a palindrome (68066086).

The spelling of 13015055 in words is "thirteen million, fifteen thousand, fifty-five".

Divisors: 1 5 29 145 89759 448795 2603011 13015055