27572005 has 4 divisors (see below), whose sum is σ = 33086412. Its totient is φ = 22057600.

The previous prime is 27571981. The next prime is 27572023. The reversal of 27572005 is 50027572.

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 20848356 + 6723649 = 4566^2 + 2593^2 .

It is not a de Polignac number, because 27572005 - 2²¹ = 25474853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2757196 + ... + 2757205.

It is an arithmetic number, because the mean of its divisors is an integer number (8271603).

Almost surely, 2^27572005 is an apocalyptic number.

It is an amenable number.

27572005 is a deficient number, since it is larger than the sum of its proper divisors (5514407).

27572005 is an equidigital number, since it uses as much as digits as its factorization.

27572005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5514406.

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 27572005 is about 5250.9051600653. The cubic root of 27572005 is about 302.1037500060.

Adding to 27572005 its reverse (50027572), we get a palindrome (77599577).

The spelling of 27572005 in words is "twenty-seven million, five hundred seventy-two thousand, five".