27164321 has 4 divisors (see below), whose sum is σ = 27260592. Its totient is φ = 27068052.

The previous prime is 27164309. The next prime is 27164341. The reversal of 27164321 is 12346172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27164321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27164341) 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, 47711 + ... + 48276.

It is an arithmetic number, because the mean of its divisors is an integer number (6815148).

Almost surely, 2^27164321 is an apocalyptic number.

It is an amenable number.

27164321 is a deficient number, since it is larger than the sum of its proper divisors (96271).

27164321 is an equidigital number, since it uses as much as digits as its factorization.

27164321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96270.

The product of its digits is 2016, while the sum is 26.

The square root of 27164321 is about 5211.9402337325. The cubic root of 27164321 is about 300.6073658223.

The spelling of 27164321 in words is "twenty-seven million, one hundred sixty-four thousand, three hundred twenty-one".