27255919 has 2 divisors, whose sum is σ = 27255920. Its totient is φ = 27255918.

The previous prime is 27255889. The next prime is 27255923. The reversal of 27255919 is 91955272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27255919 - 2⁹ = 27255407 is a prime.

It is a super-2 number, since 2×27255919² = 1485770241069122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27255979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13627959 + 13627960.

It is an arithmetic number, because the mean of its divisors is an integer number (13627960).

Almost surely, 2^27255919 is an apocalyptic number.

27255919 is a deficient number, since it is larger than the sum of its proper divisors (1).

27255919 is an equidigital number, since it uses as much as digits as its factorization.

27255919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 40.

The square root of 27255919 is about 5220.7201610506. The cubic root of 27255919 is about 300.9448690985.

The spelling of 27255919 in words is "twenty-seven million, two hundred fifty-five thousand, nine hundred nineteen".