27985523 has 2 divisors, whose sum is σ = 27985524. Its totient is φ = 27985522.

The previous prime is 27985483. The next prime is 27985541. The reversal of 27985523 is 32558972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27985523 - 2⁶ = 27985459 is a prime.

It is not a weakly prime, because it can be changed into another prime (27985543) 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, 13992761 + 13992762.

It is an arithmetic number, because the mean of its divisors is an integer number (13992762).

Almost surely, 2^27985523 is an apocalyptic number.

27985523 is a deficient number, since it is larger than the sum of its proper divisors (1).

27985523 is an equidigital number, since it uses as much as digits as its factorization.

27985523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 27985523 is about 5290.1344973450. The cubic root of 27985523 is about 303.6065540005.

The spelling of 27985523 in words is "twenty-seven million, nine hundred eighty-five thousand, five hundred twenty-three".