27780853 has 2 divisors, whose sum is σ = 27780854. Its totient is φ = 27780852.

The previous prime is 27780817. The next prime is 27780871. The reversal of 27780853 is 35808772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26967249 + 813604 = 5193^2 + 902^2 .

It is a cyclic number.

It is not a de Polignac number, because 27780853 - 2⁹ = 27780341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27780553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13890426 + 13890427.

It is an arithmetic number, because the mean of its divisors is an integer number (13890427).

Almost surely, 2^27780853 is an apocalyptic number.

It is an amenable number.

27780853 is a deficient number, since it is larger than the sum of its proper divisors (1).

27780853 is an equidigital number, since it uses as much as digits as its factorization.

27780853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 27780853 is about 5270.7545000692. The cubic root of 27780853 is about 302.8646078255.

The spelling of 27780853 in words is "twenty-seven million, seven hundred eighty thousand, eight hundred fifty-three".