27161245 has 8 divisors (see below), whose sum is σ = 32882616. Its totient is φ = 21536256.

The previous prime is 27161243. The next prime is 27161249. The reversal of 27161245 is 54216172.

It can be written as a sum of positive squares in 4 ways, for example, as 597529 + 26563716 = 773^2 + 5154^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27161245 - 2¹ = 27161243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27161243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23472 + ... + 24601.

It is an arithmetic number, because the mean of its divisors is an integer number (4110327).

Almost surely, 2^27161245 is an apocalyptic number.

It is an amenable number.

27161245 is a deficient number, since it is larger than the sum of its proper divisors (5721371).

27161245 is a wasteful number, since it uses less digits than its factorization.

27161245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48191.

The product of its digits is 3360, while the sum is 28.

The square root of 27161245 is about 5211.6451337366. The cubic root of 27161245 is about 300.5960187915.

It can be divided in two parts, 271 and 61245, that added together give a palindrome (61516).

The spelling of 27161245 in words is "twenty-seven million, one hundred sixty-one thousand, two hundred forty-five".