27317121 has 16 divisors (see below), whose sum is σ = 39325440. Its totient is φ = 16767360.

The previous prime is 27317093. The next prime is 27317131. The reversal of 27317121 is 12171372.

It is not a de Polignac number, because 27317121 - 2⁶ = 27317057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27317091 and 27317100.

It is not an unprimeable number, because it can be changed into a prime (27317131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21576 + ... + 22806.

It is an arithmetic number, because the mean of its divisors is an integer number (2457840).

Almost surely, 2^27317121 is an apocalyptic number.

It is an amenable number.

27317121 is a deficient number, since it is larger than the sum of its proper divisors (12008319).

27317121 is a wasteful number, since it uses less digits than its factorization.

27317121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816.

The product of its digits is 588, while the sum is 24.

The square root of 27317121 is about 5226.5783262092. The cubic root of 27317121 is about 301.1699536525.

Adding to 27317121 its reverse (12171372), we get a palindrome (39488493).

The spelling of 27317121 in words is "twenty-seven million, three hundred seventeen thousand, one hundred twenty-one".