27305105 has 4 divisors (see below), whose sum is σ = 32766132. Its totient is φ = 21844080.

The previous prime is 27305101. The next prime is 27305107. The reversal of 27305105 is 50150372.

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 16703569 + 10601536 = 4087^2 + 3256^2 .

It is not a de Polignac number, because 27305105 - 2² = 27305101 is a prime.

It is a super-2 number, since 2×27305105² = 1491137518122050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27305101) 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, 2730506 + ... + 2730515.

It is an arithmetic number, because the mean of its divisors is an integer number (8191533).

Almost surely, 2^27305105 is an apocalyptic number.

It is an amenable number.

27305105 is a deficient number, since it is larger than the sum of its proper divisors (5461027).

27305105 is an equidigital number, since it uses as much as digits as its factorization.

27305105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5461026.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 27305105 is about 5225.4286905478. The cubic root of 27305105 is about 301.1257885677.

Adding to 27305105 its reverse (50150372), we get a palindrome (77455477).

The spelling of 27305105 in words is "twenty-seven million, three hundred five thousand, one hundred five".