27012149 has 2 divisors, whose sum is σ = 27012150. Its totient is φ = 27012148.

The previous prime is 27012131. The next prime is 27012151. The reversal of 27012149 is 94121072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16056049 + 10956100 = 4007^2 + 3310^2 .

It is a cyclic number.

It is not a de Polignac number, because 27012149 - 2¹⁶ = 26946613 is a prime.

Together with 27012151, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27012119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13506074 + 13506075.

It is an arithmetic number, because the mean of its divisors is an integer number (13506075).

Almost surely, 2^27012149 is an apocalyptic number.

It is an amenable number.

27012149 is a deficient number, since it is larger than the sum of its proper divisors (1).

27012149 is an equidigital number, since it uses as much as digits as its factorization.

27012149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 27012149 is about 5197.3213293003. The cubic root of 27012149 is about 300.0449895491.

The spelling of 27012149 in words is "twenty-seven million, twelve thousand, one hundred forty-nine".