27145619 has 2 divisors, whose sum is σ = 27145620. Its totient is φ = 27145618.

The previous prime is 27145607. The next prime is 27145621. The reversal of 27145619 is 91654172.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27145619 - 2²⁴ = 10368403 is a prime.

It is a super-2 number, since 2×27145619² = 1473769261786322, which contains 22 as substring.

Together with 27145621, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27145639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13572809 + 13572810.

It is an arithmetic number, because the mean of its divisors is an integer number (13572810).

Almost surely, 2^27145619 is an apocalyptic number.

27145619 is a deficient number, since it is larger than the sum of its proper divisors (1).

27145619 is an equidigital number, since it uses as much as digits as its factorization.

27145619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 27145619 is about 5210.1457753119. The cubic root of 27145619 is about 300.5383629362.

The spelling of 27145619 in words is "twenty-seven million, one hundred forty-five thousand, six hundred nineteen".