27154849 has 2 divisors, whose sum is σ = 27154850. Its totient is φ = 27154848.

The previous prime is 27154847. The next prime is 27154867. The reversal of 27154849 is 94845172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19864849 + 7290000 = 4457^2 + 2700^2 .

It is a cyclic number.

It is not a de Polignac number, because 27154849 - 2¹ = 27154847 is a prime.

Together with 27154847, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27154847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13577424 + 13577425.

It is an arithmetic number, because the mean of its divisors is an integer number (13577425).

Almost surely, 2^27154849 is an apocalyptic number.

It is an amenable number.

27154849 is a deficient number, since it is larger than the sum of its proper divisors (1).

27154849 is an equidigital number, since it uses as much as digits as its factorization.

27154849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 27154849 is about 5211.0314717914. The cubic root of 27154849 is about 300.5724218974.

The spelling of 27154849 in words is "twenty-seven million, one hundred fifty-four thousand, eight hundred forty-nine".