27007221 has 16 divisors (see below), whose sum is σ = 37862784. Its totient is φ = 17090304.

The previous prime is 27007219. The next prime is 27007229. The reversal of 27007221 is 12270072.

It is not a de Polignac number, because 27007221 - 2¹ = 27007219 is a prime.

It is a super-3 number, since 3×27007221³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27007229) 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 15 ways as a sum of consecutive naturals, for example, 8025 + ... + 10881.

It is an arithmetic number, because the mean of its divisors is an integer number (2366424).

Almost surely, 2^27007221 is an apocalyptic number.

It is an amenable number.

27007221 is a deficient number, since it is larger than the sum of its proper divisors (10855563).

27007221 is a wasteful number, since it uses less digits than its factorization.

27007221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 27007221 is about 5196.8472173040. The cubic root of 27007221 is about 300.0267420606.

Adding to 27007221 its reverse (12270072), we get a palindrome (39277293).

The spelling of 27007221 in words is "twenty-seven million, seven thousand, two hundred twenty-one".