27154243 has 2 divisors, whose sum is σ = 27154244. Its totient is φ = 27154242.

The previous prime is 27154241. The next prime is 27154261. The reversal of 27154243 is 34245172.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27154243 - 2¹ = 27154241 is a prime.

Together with 27154241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27154241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13577121 + 13577122.

It is an arithmetic number, because the mean of its divisors is an integer number (13577122).

Almost surely, 2^27154243 is an apocalyptic number.

27154243 is a deficient number, since it is larger than the sum of its proper divisors (1).

27154243 is an equidigital number, since it uses as much as digits as its factorization.

27154243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 28.

The square root of 27154243 is about 5210.9733255890. The cubic root of 27154243 is about 300.5701859770.

The spelling of 27154243 in words is "twenty-seven million, one hundred fifty-four thousand, two hundred forty-three".