27453 has 4 divisors (see below), whose sum is σ = 36608. Its totient is φ = 18300.

The previous prime is 27449. The next prime is 27457. The reversal of 27453 is 35472.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (27449) and next prime (27457).

It is not a de Polignac number, because 27453 - 2² = 27449 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

27453 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4573 + ... + 4578.

It is an arithmetic number, because the mean of its divisors is an integer number (9152).

2²⁷⁴⁵³ is an apocalyptic number.

It is an amenable number.

27453 is a deficient number, since it is larger than the sum of its proper divisors (9155).

27453 is an equidigital number, since it uses as much as digits as its factorization.

27453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9154.

The product of its digits is 840, while the sum is 21.

The square root of 27453 is about 165.6894685851. The cubic root of 27453 is about 30.1668481144.

The spelling of 27453 in words is "twenty-seven thousand, four hundred fifty-three".