549448313 has 4 divisors (see below), whose sum is σ = 581768820. Its totient is φ = 517127808.

The previous prime is 549448303. The next prime is 549448321. The reversal of 549448313 is 313844945.

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 232501504 + 316946809 = 15248^2 + 17803^2 .

It is a cyclic number.

It is not a de Polignac number, because 549448313 - 2⁸ = 549448057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (549448303) 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, 16160228 + ... + 16160261.

It is an arithmetic number, because the mean of its divisors is an integer number (145442205).

Almost surely, 2^549448313 is an apocalyptic number.

It is an amenable number.

549448313 is a deficient number, since it is larger than the sum of its proper divisors (32320507).

549448313 is a wasteful number, since it uses less digits than its factorization.

549448313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32320506.

The product of its digits is 207360, while the sum is 41.

The square root of 549448313 is about 23440.3138417556. The cubic root of 549448313 is about 819.0472341704.

The spelling of 549448313 in words is "five hundred forty-nine million, four hundred forty-eight thousand, three hundred thirteen".