27121671 has 6 divisors (see below), whose sum is σ = 39175760. Its totient is φ = 18081108.

The previous prime is 27121663. The next prime is 27121687. The reversal of 27121671 is 17612172.

It is not a de Polignac number, because 27121671 - 2³ = 27121663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27121571) 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 5 ways as a sum of consecutive naturals, for example, 1506751 + ... + 1506768.

Almost surely, 2^27121671 is an apocalyptic number.

27121671 is a deficient number, since it is larger than the sum of its proper divisors (12054089).

27121671 is a wasteful number, since it uses less digits than its factorization.

27121671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013525 (or 3013522 counting only the distinct ones).

The product of its digits is 1176, while the sum is 27.

The square root of 27121671 is about 5207.8470599663. The cubic root of 27121671 is about 300.4499581216.

The spelling of 27121671 in words is "twenty-seven million, one hundred twenty-one thousand, six hundred seventy-one".