27071045 has 4 divisors (see below), whose sum is σ = 32485260. Its totient is φ = 21656832.

The previous prime is 27071027. The next prime is 27071047. The reversal of 27071045 is 54017072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14010049 + 13060996 = 3743^2 + 3614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27071045 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27071047) 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 3 ways as a sum of consecutive naturals, for example, 2707100 + ... + 2707109.

It is an arithmetic number, because the mean of its divisors is an integer number (8121315).

Almost surely, 2^27071045 is an apocalyptic number.

It is an amenable number.

27071045 is a deficient number, since it is larger than the sum of its proper divisors (5414215).

27071045 is an equidigital number, since it uses as much as digits as its factorization.

27071045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5414214.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 27071045 is about 5202.9842398377. The cubic root of 27071045 is about 300.2628991757.

The spelling of 27071045 in words is "twenty-seven million, seventy-one thousand, forty-five".