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13156145 = 54635683
BaseRepresentation
bin110010001011…
…111100110001
3220202101211122
4302023330301
511331444040
61145552025
7216553052
oct62137461
926671748
1013156145
117476452
1244a5615
132958302
141a66729
15124d1b5
hexc8bf31

13156145 has 8 divisors (see below), whose sum is σ = 15824256. Its totient is φ = 10500336.

The previous prime is 13156109. The next prime is 13156153. The reversal of 13156145 is 54165131.

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 13156145 - 218 = 12894001 is a prime.

It is a super-2 number, since 2×131561452 = 346168302522050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 527 + ... + 5156.

It is an arithmetic number, because the mean of its divisors is an integer number (1978032).

Almost surely, 213156145 is an apocalyptic number.

It is an amenable number.

13156145 is a deficient number, since it is larger than the sum of its proper divisors (2668111).

13156145 is an equidigital number, since it uses as much as digits as its factorization.

13156145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6151.

The product of its digits is 1800, while the sum is 26.

The square root of 13156145 is about 3627.1400579520. The cubic root of 13156145 is about 236.0711326801.

The spelling of 13156145 in words is "thirteen million, one hundred fifty-six thousand, one hundred forty-five".

Divisors: 1 5 463 2315 5683 28415 2631229 13156145