27052821 has 12 divisors (see below), whose sum is σ = 39121420. Its totient is φ = 18014400.

The previous prime is 27052793. The next prime is 27052859. The reversal of 27052821 is 12825072.

It can be written as a sum of positive squares in 2 ways, for example, as 8468100 + 18584721 = 2910^2 + 4311^2 .

It is not a de Polignac number, because 27052821 - 2⁹ = 27052309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27051821) 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 in 11 ways as a sum of consecutive naturals, for example, 14121 + ... + 15921.

Almost surely, 2^27052821 is an apocalyptic number.

It is an amenable number.

27052821 is a deficient number, since it is larger than the sum of its proper divisors (12068599).

27052821 is a wasteful number, since it uses less digits than its factorization.

27052821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476 (or 3473 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 27052821 is about 5201.2326423647. The cubic root of 27052821 is about 300.1955058971.

Adding to 27052821 its reverse (12825072), we get a palindrome (39877893).

The spelling of 27052821 in words is "twenty-seven million, fifty-two thousand, eight hundred twenty-one".