548043421 has 4 divisors (see below), whose sum is σ = 566941500. Its totient is φ = 529145344.

The previous prime is 548043409. The next prime is 548043427. The reversal of 548043421 is 124340845.

548043421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 176517796 + 371525625 = 13286^2 + 19275^2 .

It is a cyclic number.

It is not a de Polignac number, because 548043421 - 2¹⁷ = 547912349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548043427) 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, 9448996 + ... + 9449053.

It is an arithmetic number, because the mean of its divisors is an integer number (141735375).

Almost surely, 2^548043421 is an apocalyptic number.

It is an amenable number.

548043421 is a deficient number, since it is larger than the sum of its proper divisors (18898079).

548043421 is a wasteful number, since it uses less digits than its factorization.

548043421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18898078.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 548043421 is about 23410.3272296651. The cubic root of 548043421 is about 818.3485606107.

The spelling of 548043421 in words is "five hundred forty-eight million, forty-three thousand, four hundred twenty-one".