27121371 has 4 divisors (see below), whose sum is σ = 36161832. Its totient is φ = 18080912.

The previous prime is 27121321. The next prime is 27121403. The reversal of 27121371 is 17312172.

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

It is a cyclic number.

It is not a de Polignac number, because 27121371 - 2¹³ = 27113179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27121321) 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 in 3 ways as a sum of consecutive naturals, for example, 4520226 + ... + 4520231.

It is an arithmetic number, because the mean of its divisors is an integer number (9040458).

Almost surely, 2^27121371 is an apocalyptic number.

27121371 is a deficient number, since it is larger than the sum of its proper divisors (9040461).

27121371 is an equidigital number, since it uses as much as digits as its factorization.

27121371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9040460.

The product of its digits is 588, while the sum is 24.

The square root of 27121371 is about 5207.8182571975. The cubic root of 27121371 is about 300.4488503319.

The spelling of 27121371 in words is "twenty-seven million, one hundred twenty-one thousand, three hundred seventy-one".