27020155 has 4 divisors (see below), whose sum is σ = 32424192. Its totient is φ = 21616120.

The previous prime is 27020143. The next prime is 27020177. The reversal of 27020155 is 55102072.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27020155 - 2¹⁹ = 26495867 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2702011 + ... + 2702020.

It is an arithmetic number, because the mean of its divisors is an integer number (8106048).

Almost surely, 2^27020155 is an apocalyptic number.

27020155 is a deficient number, since it is larger than the sum of its proper divisors (5404037).

27020155 is an equidigital number, since it uses as much as digits as its factorization.

27020155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5404036.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 27020155 is about 5198.0914766864. The cubic root of 27020155 is about 300.0746295814.

The spelling of 27020155 in words is "twenty-seven million, twenty thousand, one hundred fifty-five".