27117427 has 4 divisors (see below), whose sum is σ = 28544680. Its totient is φ = 25690176.

The previous prime is 27117353. The next prime is 27117457. The reversal of 27117427 is 72471172.

27117427 is nontrivially palindromic in base 2.

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

It is a cyclic number.

It is not a de Polignac number, because 27117427 - 2¹⁹ = 26593139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27117457) 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, 713598 + ... + 713635.

It is an arithmetic number, because the mean of its divisors is an integer number (7136170).

Almost surely, 2^27117427 is an apocalyptic number.

27117427 is a deficient number, since it is larger than the sum of its proper divisors (1427253).

27117427 is a wasteful number, since it uses less digits than its factorization.

27117427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427252.

The product of its digits is 5488, while the sum is 31.

The square root of 27117427 is about 5207.4395819827. The cubic root of 27117427 is about 300.4342858308.

Adding to 27117427 its reverse (72471172), we get a palindrome (99588599).

The spelling of 27117427 in words is "twenty-seven million, one hundred seventeen thousand, four hundred twenty-seven".