27135657 has 12 divisors (see below), whose sum is σ = 39254020. Its totient is φ = 18063648.

The previous prime is 27135649. The next prime is 27135679. The reversal of 27135657 is 75653172.

It can be written as a sum of positive squares in 2 ways, for example, as 6533136 + 20602521 = 2556^2 + 4539^2 .

It is not a de Polignac number, because 27135657 - 2³ = 27135649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27135637) 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 11 ways as a sum of consecutive naturals, for example, 5643 + ... + 9279.

Almost surely, 2^27135657 is an apocalyptic number.

It is an amenable number.

27135657 is a deficient number, since it is larger than the sum of its proper divisors (12118363).

27135657 is a wasteful number, since it uses less digits than its factorization.

27135657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4472 (or 4469 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 27135657 is about 5209.1896682690. The cubic root of 27135657 is about 300.5015942101.

The spelling of 27135657 in words is "twenty-seven million, one hundred thirty-five thousand, six hundred fifty-seven".