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27145 = 56189
BaseRepresentation
bin110101000001001
31101020101
412220021
51332040
6325401
7142066
oct65011
941211
1027145
1119438
1213861
13c481
149c6d
15809a
hex6a09

27145 has 8 divisors (see below), whose sum is σ = 33480. Its totient is φ = 21120.

The previous prime is 27143. The next prime is 27179. The reversal of 27145 is 54172.

27145 = 1162 + 1172.

27145 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 576 + 26569 = 24^2 + 163^2 .

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

It is not a de Polignac number, because 27145 - 21 = 27143 is a prime.

27145 is strictly pandigital in base 6.

It is not an unprimeable number, because it can be changed into a prime (27143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261 + ... + 349.

It is an arithmetic number, because the mean of its divisors is an integer number (4185).

227145 is an apocalyptic number.

27145 is the 117-th centered square number.

It is an amenable number.

27145 is a deficient number, since it is larger than the sum of its proper divisors (6335).

27145 is an equidigital number, since it uses as much as digits as its factorization.

27145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155.

The product of its digits is 280, while the sum is 19.

The square root of 27145 is about 164.7573974060. The cubic root of 27145 is about 30.0536078532.

The spelling of 27145 in words is "twenty-seven thousand, one hundred forty-five".

Divisors: 1 5 61 89 305 445 5429 27145