27853261 has 2 divisors, whose sum is σ = 27853262. Its totient is φ = 27853260.

The previous prime is 27853247. The next prime is 27853279. The reversal of 27853261 is 16235872.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22184100 + 5669161 = 4710^2 + 2381^2 .

It is a cyclic number.

It is not a de Polignac number, because 27853261 - 2²¹ = 25756109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27853201) 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 as a sum of consecutive naturals, namely, 13926630 + 13926631.

It is an arithmetic number, because the mean of its divisors is an integer number (13926631).

Almost surely, 2^27853261 is an apocalyptic number.

It is an amenable number.

27853261 is a deficient number, since it is larger than the sum of its proper divisors (1).

27853261 is an equidigital number, since it uses as much as digits as its factorization.

27853261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 27853261 is about 5277.6188759705. The cubic root of 27853261 is about 303.1275082656.

The spelling of 27853261 in words is "twenty-seven million, eight hundred fifty-three thousand, two hundred sixty-one".