27540023 has 4 divisors (see below), whose sum is σ = 31474320. Its totient is φ = 23605728.

The previous prime is 27540013. The next prime is 27540041. The reversal of 27540023 is 32004572.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27540023 - 2⁶ = 27539959 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 (27540013) 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, 1967138 + ... + 1967151.

It is an arithmetic number, because the mean of its divisors is an integer number (7868580).

Almost surely, 2^27540023 is an apocalyptic number.

27540023 is a deficient number, since it is larger than the sum of its proper divisors (3934297).

27540023 is an equidigital number, since it uses as much as digits as its factorization.

27540023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934296.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 27540023 is about 5247.8588967311. The cubic root of 27540023 is about 301.9868969360.

Adding to 27540023 its reverse (32004572), we get a palindrome (59544595).

The spelling of 27540023 in words is "twenty-seven million, five hundred forty thousand, twenty-three".