27540993 has 4 divisors (see below), whose sum is σ = 36721328. Its totient is φ = 18360660.

The previous prime is 27540991. The next prime is 27541001. The reversal of 27540993 is 39904572.

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 not a de Polignac number, because 27540993 - 2¹ = 27540991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27540991) 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, 4590163 + ... + 4590168.

It is an arithmetic number, because the mean of its divisors is an integer number (9180332).

Almost surely, 2^27540993 is an apocalyptic number.

It is an amenable number.

27540993 is a deficient number, since it is larger than the sum of its proper divisors (9180335).

27540993 is an equidigital number, since it uses as much as digits as its factorization.

27540993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9180334.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 27540993 is about 5247.9513145608. The cubic root of 27540993 is about 301.9904423682.

The spelling of 27540993 in words is "twenty-seven million, five hundred forty thousand, nine hundred ninety-three".