27272005 has 4 divisors (see below), whose sum is σ = 32726412. Its totient is φ = 21817600.

The previous prime is 27271991. The next prime is 27272099. The reversal of 27272005 is 50027272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17926756 + 9345249 = 4234^2 + 3057^2 .

It is not a de Polignac number, because 27272005 - 2¹³ = 27263813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2727196 + ... + 2727205.

It is an arithmetic number, because the mean of its divisors is an integer number (8181603).

Almost surely, 2^27272005 is an apocalyptic number.

It is an amenable number.

27272005 is a deficient number, since it is larger than the sum of its proper divisors (5454407).

27272005 is an equidigital number, since it uses as much as digits as its factorization.

27272005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5454406.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 27272005 is about 5222.2605258643. The cubic root of 27272005 is about 301.0040617105.

Adding to 27272005 its reverse (50027272), we get a palindrome (77299277).

The spelling of 27272005 in words is "twenty-seven million, two hundred seventy-two thousand, five".