27242505 has 24 divisors (see below), whose sum is σ = 47872968. Its totient is φ = 14328576.

The previous prime is 27242473. The next prime is 27242519. The reversal of 27242505 is 50524272.

It can be written as a sum of positive squares in 4 ways, for example, as 1140624 + 26101881 = 1068^2 + 5109^2 .

It is not a de Polignac number, because 27242505 - 2⁵ = 27242473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 862 + ... + 7431.

It is an arithmetic number, because the mean of its divisors is an integer number (1994707).

Almost surely, 2^27242505 is an apocalyptic number.

It is an amenable number.

27242505 is a deficient number, since it is larger than the sum of its proper divisors (20630463).

27242505 is a wasteful number, since it uses less digits than its factorization.

27242505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8377 (or 8374 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 27242505 is about 5219.4353142845. The cubic root of 27242505 is about 300.8954909933.

Adding to 27242505 its reverse (50524272), we get a palindrome (77766777).

The spelling of 27242505 in words is "twenty-seven million, two hundred forty-two thousand, five hundred five".