548431449 has 4 divisors (see below), whose sum is σ = 731241936. Its totient is φ = 365620964.

The previous prime is 548431421. The next prime is 548431453. The reversal of 548431449 is 944134845.

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 548431449 - 2⁷ = 548431321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 548431449.

It is not an unprimeable number, because it can be changed into a prime (548431489) 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, 91405239 + ... + 91405244.

It is an arithmetic number, because the mean of its divisors is an integer number (182810484).

Almost surely, 2^548431449 is an apocalyptic number.

It is an amenable number.

548431449 is a deficient number, since it is larger than the sum of its proper divisors (182810487).

548431449 is a wasteful number, since it uses less digits than its factorization.

548431449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182810486.

The product of its digits is 276480, while the sum is 42.

The square root of 548431449 is about 23418.6133022432. The cubic root of 548431449 is about 818.5416519060.

The spelling of 548431449 in words is "five hundred forty-eight million, four hundred thirty-one thousand, four hundred forty-nine".