27021117 has 4 divisors (see below), whose sum is σ = 36028160. Its totient is φ = 18014076.

The previous prime is 27021083. The next prime is 27021121. The reversal of 27021117 is 71112072.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27021117 - 2⁶ = 27021053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27021093 and 27021102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27021187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4503517 + ... + 4503522.

It is an arithmetic number, because the mean of its divisors is an integer number (9007040).

Almost surely, 2^27021117 is an apocalyptic number.

It is an amenable number.

27021117 is a deficient number, since it is larger than the sum of its proper divisors (9007043).

27021117 is an equidigital number, since it uses as much as digits as its factorization.

27021117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9007042.

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 27021117 is about 5198.1840098250. The cubic root of 27021117 is about 300.0781907300.

Adding to 27021117 its reverse (71112072), we get a palindrome (98133189).

The spelling of 27021117 in words is "twenty-seven million, twenty-one thousand, one hundred seventeen".