549249065 has 4 divisors (see below), whose sum is σ = 659098884. Its totient is φ = 439399248.

The previous prime is 549249059. The next prime is 549249091. The reversal of 549249065 is 560942945.

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 334597264 + 214651801 = 18292^2 + 14651^2 .

It is a cyclic number.

It is not a de Polignac number, because 549249065 - 2¹⁰ = 549248041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54924902 + ... + 54924911.

It is an arithmetic number, because the mean of its divisors is an integer number (164774721).

Almost surely, 2^549249065 is an apocalyptic number.

It is an amenable number.

549249065 is a deficient number, since it is larger than the sum of its proper divisors (109849819).

549249065 is a wasteful number, since it uses less digits than its factorization.

549249065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109849818.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 549249065 is about 23436.0633426350. The cubic root of 549249065 is about 818.9482177268.

The spelling of 549249065 in words is "five hundred forty-nine million, two hundred forty-nine thousand, sixty-five".