27145329 has 4 divisors (see below), whose sum is σ = 36193776. Its totient is φ = 18096884.

The previous prime is 27145303. The next prime is 27145331. The reversal of 27145329 is 92354172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27145329 - 2⁵ = 27145297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27145329.

It is not an unprimeable number, because it can be changed into a prime (27145829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4524219 + ... + 4524224.

It is an arithmetic number, because the mean of its divisors is an integer number (9048444).

Almost surely, 2^27145329 is an apocalyptic number.

It is an amenable number.

27145329 is a deficient number, since it is larger than the sum of its proper divisors (9048447).

27145329 is an equidigital number, since it uses as much as digits as its factorization.

27145329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9048446.

The product of its digits is 15120, while the sum is 33.

The square root of 27145329 is about 5210.1179449222. The cubic root of 27145329 is about 300.5372927029.

The spelling of 27145329 in words is "twenty-seven million, one hundred forty-five thousand, three hundred twenty-nine".