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13161055 = 56143151
BaseRepresentation
bin110010001101…
…001001011111
3220202122120111
4302031021133
511332123210
61150030451
7216603265
oct62151137
926678514
1013161055
11747a106
1244a8427
13295a60b
141a68435
15124e88a
hexc8d25f

13161055 has 8 divisors (see below), whose sum is σ = 16052544. Its totient is φ = 10356000.

The previous prime is 13161047. The next prime is 13161059. The reversal of 13161055 is 55016131.

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

It is not a de Polignac number, because 13161055 - 23 = 13161047 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 (13161059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21271 + ... + 21880.

It is an arithmetic number, because the mean of its divisors is an integer number (2006568).

Almost surely, 213161055 is an apocalyptic number.

13161055 is a deficient number, since it is larger than the sum of its proper divisors (2891489).

13161055 is an equidigital number, since it uses as much as digits as its factorization.

13161055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43217.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 13161055 is about 3627.8168366112. The cubic root of 13161055 is about 236.1004970341.

Adding to 13161055 its reverse (55016131), we get a palindrome (68177186).

The spelling of 13161055 in words is "thirteen million, one hundred sixty-one thousand, fifty-five".

Divisors: 1 5 61 305 43151 215755 2632211 13161055