27855419 has 2 divisors, whose sum is σ = 27855420. Its totient is φ = 27855418.

The previous prime is 27855379. The next prime is 27855427. The reversal of 27855419 is 91455872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27855419 - 2¹² = 27851323 is a prime.

It is a super-2 number, since 2×27855419² = 1551848735331122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27855449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13927709 + 13927710.

It is an arithmetic number, because the mean of its divisors is an integer number (13927710).

Almost surely, 2^27855419 is an apocalyptic number.

27855419 is a deficient number, since it is larger than the sum of its proper divisors (1).

27855419 is an equidigital number, since it uses as much as digits as its factorization.

27855419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 41.

The square root of 27855419 is about 5277.8233202713. The cubic root of 27855419 is about 303.1353365802.

The spelling of 27855419 in words is "twenty-seven million, eight hundred fifty-five thousand, four hundred nineteen".