27009901 has 4 divisors (see below), whose sum is σ = 27020704. Its totient is φ = 26999100.

The previous prime is 27009893. The next prime is 27009907. The reversal of 27009901 is 10990072.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 27009901 - 2³ = 27009893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27009901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27009907) 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, 496 + ... + 7366.

It is an arithmetic number, because the mean of its divisors is an integer number (6755176).

Almost surely, 2^27009901 is an apocalyptic number.

It is an amenable number.

27009901 is a deficient number, since it is larger than the sum of its proper divisors (10803).

27009901 is an equidigital number, since it uses as much as digits as its factorization.

27009901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10802.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 27009901 is about 5197.1050595500. The cubic root of 27009901 is about 300.0366658889.

Adding to 27009901 its reverse (10990072), we get a palindrome (37999973).

The spelling of 27009901 in words is "twenty-seven million, nine thousand, nine hundred one".