27765049 has 4 divisors (see below), whose sum is σ = 29900836. Its totient is φ = 25629264.

The previous prime is 27765043. The next prime is 27765053. The reversal of 27765049 is 94056772.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3686400 + 24078649 = 1920^2 + 4907^2 .

It is a cyclic number.

It is not a de Polignac number, because 27765049 - 2³ = 27765041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27765041) 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, 1067874 + ... + 1067899.

It is an arithmetic number, because the mean of its divisors is an integer number (7475209).

Almost surely, 2^27765049 is an apocalyptic number.

It is an amenable number.

27765049 is a deficient number, since it is larger than the sum of its proper divisors (2135787).

27765049 is a wasteful number, since it uses less digits than its factorization.

27765049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135786.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 27765049 is about 5269.2550706907. The cubic root of 27765049 is about 302.8071656225.

The spelling of 27765049 in words is "twenty-seven million, seven hundred sixty-five thousand, forty-nine".