27750027 has 4 divisors (see below), whose sum is σ = 37000040. Its totient is φ = 18500016.

The previous prime is 27749947. The next prime is 27750031. The reversal of 27750027 is 72005772.

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

It is not a de Polignac number, because 27750027 - 2¹⁰ = 27749003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27749976 and 27750003.

It is not an unprimeable number, because it can be changed into a prime (27750077) 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, 4625002 + ... + 4625007.

It is an arithmetic number, because the mean of its divisors is an integer number (9250010).

Almost surely, 2^27750027 is an apocalyptic number.

27750027 is a deficient number, since it is larger than the sum of its proper divisors (9250013).

27750027 is an equidigital number, since it uses as much as digits as its factorization.

27750027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9250012.

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 27750027 is about 5267.8294391523. The cubic root of 27750027 is about 302.7525455155.

Adding to 27750027 its reverse (72005772), we get a palindrome (99755799).

The spelling of 27750027 in words is "twenty-seven million, seven hundred fifty thousand, twenty-seven".