548311643 has 4 divisors (see below), whose sum is σ = 598158168. Its totient is φ = 498465120.

The previous prime is 548311637. The next prime is 548311657. The reversal of 548311643 is 346113845.

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

It is a cyclic number.

It is not a de Polignac number, because 548311643 - 2⁴ = 548311627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (548311943) 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, 24923246 + ... + 24923267.

It is an arithmetic number, because the mean of its divisors is an integer number (149539542).

Almost surely, 2^548311643 is an apocalyptic number.

548311643 is a deficient number, since it is larger than the sum of its proper divisors (49846525).

548311643 is a wasteful number, since it uses less digits than its factorization.

548311643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49846524.

The product of its digits is 34560, while the sum is 35.

The square root of 548311643 is about 23416.0552399417. The cubic root of 548311643 is about 818.4820435186.

The spelling of 548311643 in words is "five hundred forty-eight million, three hundred eleven thousand, six hundred forty-three".