27138453 has 4 divisors (see below), whose sum is σ = 36184608. Its totient is φ = 18092300.

The previous prime is 27138451. The next prime is 27138457. The reversal of 27138453 is 35483172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27138453 - 2¹ = 27138451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27138451) 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 3 ways as a sum of consecutive naturals, for example, 4523073 + ... + 4523078.

It is an arithmetic number, because the mean of its divisors is an integer number (9046152).

Almost surely, 2^27138453 is an apocalyptic number.

It is an amenable number.

27138453 is a deficient number, since it is larger than the sum of its proper divisors (9046155).

27138453 is an equidigital number, since it uses as much as digits as its factorization.

27138453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9046154.

The product of its digits is 20160, while the sum is 33.

The square root of 27138453 is about 5209.4580332315. The cubic root of 27138453 is about 300.5119148693.

The spelling of 27138453 in words is "twenty-seven million, one hundred thirty-eight thousand, four hundred fifty-three".