27183421 has 2 divisors, whose sum is σ = 27183422. Its totient is φ = 27183420.

The previous prime is 27183407. The next prime is 27183427. The reversal of 27183421 is 12438172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27154521 + 28900 = 5211^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 27183421 - 2⁷ = 27183293 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27183421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27183427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13591710 + 13591711.

It is an arithmetic number, because the mean of its divisors is an integer number (13591711).

Almost surely, 2^27183421 is an apocalyptic number.

It is an amenable number.

27183421 is a deficient number, since it is larger than the sum of its proper divisors (1).

27183421 is an equidigital number, since it uses as much as digits as its factorization.

27183421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 28.

The square root of 27183421 is about 5213.7722428200. The cubic root of 27183421 is about 300.6778044873.

The spelling of 27183421 in words is "twenty-seven million, one hundred eighty-three thousand, four hundred twenty-one".