548981313 has 4 divisors (see below), whose sum is σ = 731975088. Its totient is φ = 365987540.

The previous prime is 548981311. The next prime is 548981341. The reversal of 548981313 is 313189845.

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.

It is a cyclic number.

It is not a de Polignac number, because 548981313 - 2¹ = 548981311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (548981311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91496883 + ... + 91496888.

It is an arithmetic number, because the mean of its divisors is an integer number (182993772).

Almost surely, 2^548981313 is an apocalyptic number.

It is an amenable number.

548981313 is a deficient number, since it is larger than the sum of its proper divisors (182993775).

548981313 is a wasteful number, since it uses less digits than its factorization.

548981313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182993774.

The product of its digits is 103680, while the sum is 42.

The square root of 548981313 is about 23430.3502534640. The cubic root of 548981313 is about 818.8151204502.

The spelling of 548981313 in words is "five hundred forty-eight million, nine hundred eighty-one thousand, three hundred thirteen".