27156919 has 2 divisors, whose sum is σ = 27156920. Its totient is φ = 27156918.

The previous prime is 27156901. The next prime is 27156931. The reversal of 27156919 is 91965172.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27156919 - 2²³ = 18768311 is a prime.

It is a super-2 number, since 2×27156919² = 1474996499145122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27156959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13578459 + 13578460.

It is an arithmetic number, because the mean of its divisors is an integer number (13578460).

Almost surely, 2^27156919 is an apocalyptic number.

27156919 is a deficient number, since it is larger than the sum of its proper divisors (1).

27156919 is an equidigital number, since it uses as much as digits as its factorization.

27156919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 40.

The square root of 27156919 is about 5211.2300851143. The cubic root of 27156919 is about 300.5800591964.

The spelling of 27156919 in words is "twenty-seven million, one hundred fifty-six thousand, nine hundred nineteen".