27777223 has 2 divisors, whose sum is σ = 27777224. Its totient is φ = 27777222.

The previous prime is 27777199. The next prime is 27777227. The reversal of 27777223 is 32277772.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27777223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27777227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13888611 + 13888612.

It is an arithmetic number, because the mean of its divisors is an integer number (13888612).

Almost surely, 2^27777223 is an apocalyptic number.

27777223 is a deficient number, since it is larger than the sum of its proper divisors (1).

27777223 is an equidigital number, since it uses as much as digits as its factorization.

27777223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57624, while the sum is 37.

The square root of 27777223 is about 5270.4101358433. The cubic root of 27777223 is about 302.8514159290.

It can be divided in two parts, 2777 and 7223, that added together give a 4-th power (10000 = 10⁴).

The spelling of 27777223 in words is "twenty-seven million, seven hundred seventy-seven thousand, two hundred twenty-three".