27091321 has 8 divisors (see below), whose sum is σ = 29056320. Its totient is φ = 25180272.

The previous prime is 27091297. The next prime is 27091343. The reversal of 27091321 is 12319072.

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 27091321 - 2²³ = 18702713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27091021) 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, 12445 + ... + 14458.

It is an arithmetic number, because the mean of its divisors is an integer number (3632040).

Almost surely, 2^27091321 is an apocalyptic number.

It is an amenable number.

27091321 is a deficient number, since it is larger than the sum of its proper divisors (1964999).

27091321 is a wasteful number, since it uses less digits than its factorization.

27091321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26975.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 27091321 is about 5204.9323722792. The cubic root of 27091321 is about 300.3378453182.

The spelling of 27091321 in words is "twenty-seven million, ninety-one thousand, three hundred twenty-one".