27000145 has 8 divisors (see below), whose sum is σ = 32844456. Its totient is φ = 21303936.

The previous prime is 27000143. The next prime is 27000179. The reversal of 27000145 is 54100072.

It can be written as a sum of positive squares in 4 ways, for example, as 5683456 + 21316689 = 2384^2 + 4617^2 .

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 27000145 - 2¹ = 27000143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27000143) 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, 36622 + ... + 37351.

It is an arithmetic number, because the mean of its divisors is an integer number (4105557).

Almost surely, 2^27000145 is an apocalyptic number.

It is an amenable number.

27000145 is a deficient number, since it is larger than the sum of its proper divisors (5844311).

27000145 is an equidigital number, since it uses as much as digits as its factorization.

27000145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74051.

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

The square root of 27000145 is about 5196.1663753194. The cubic root of 27000145 is about 300.0005370361. Note that the first 3 decimals are identical.

The spelling of 27000145 in words is "twenty-seven million, one hundred forty-five", and thus it is an aban number.