27541381 has 12 divisors (see below), whose sum is σ = 32821740. Its totient is φ = 23029440.

The previous prime is 27541379. The next prime is 27541391. The reversal of 27541381 is 18314572.

It can be written as a sum of positive squares in 2 ways, for example, as 11621281 + 15920100 = 3409^2 + 3990^2 .

It is not a de Polignac number, because 27541381 - 2¹ = 27541379 is a prime.

It is a super-2 number, since 2×27541381² = 1517055334774322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27541301) 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, 4846 + ... + 8863.

It is an arithmetic number, because the mean of its divisors is an integer number (2735145).

Almost surely, 2^27541381 is an apocalyptic number.

It is an amenable number.

27541381 is a deficient number, since it is larger than the sum of its proper divisors (5280359).

27541381 is a wasteful number, since it uses less digits than its factorization.

27541381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13764 (or 13757 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 27541381 is about 5247.9882812369. The cubic root of 27541381 is about 301.9918605177.

The spelling of 27541381 in words is "twenty-seven million, five hundred forty-one thousand, three hundred eighty-one".