27055221 has 16 divisors (see below), whose sum is σ = 38784000. Its totient is φ = 16722288.

The previous prime is 27055207. The next prime is 27055247. The reversal of 27055221 is 12255072.

It is not a de Polignac number, because 27055221 - 2¹⁰ = 27054197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27055191 and 27055200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27056221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2371 + ... + 7728.

It is an arithmetic number, because the mean of its divisors is an integer number (2424000).

Almost surely, 2^27055221 is an apocalyptic number.

It is an amenable number.

27055221 is a deficient number, since it is larger than the sum of its proper divisors (11728779).

27055221 is a wasteful number, since it uses less digits than its factorization.

27055221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10168.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 27055221 is about 5201.4633517886. The cubic root of 27055221 is about 300.2043829493.

The spelling of 27055221 in words is "twenty-seven million, fifty-five thousand, two hundred twenty-one".