27005145 has 8 divisors (see below), whose sum is σ = 43208256. Its totient is φ = 14402736.

The previous prime is 27005107. The next prime is 27005149. The reversal of 27005145 is 54150072.

27005145 is nontrivially palindromic in base 4.

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

It is not a de Polignac number, because 27005145 - 2⁸ = 27004889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27005149) by changing a digit.

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, 900157 + ... + 900186.

It is an arithmetic number, because the mean of its divisors is an integer number (5401032).

Almost surely, 2^27005145 is an apocalyptic number.

It is an amenable number.

27005145 is a deficient number, since it is larger than the sum of its proper divisors (16203111).

27005145 is a wasteful number, since it uses less digits than its factorization.

27005145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800351.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 27005145 is about 5196.6474769797. The cubic root of 27005145 is about 300.0190543453.

The spelling of 27005145 in words is "twenty-seven million, five thousand, one hundred forty-five".