54431009 has 4 divisors (see below), whose sum is σ = 56186880. Its totient is φ = 52675140.

The previous prime is 54430997. The next prime is 54431011. The reversal of 54431009 is 90013445.

54431009 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, 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 54431009 - 2⁴ = 54430993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54431089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877889 + ... + 877950.

It is an arithmetic number, because the mean of its divisors is an integer number (14046720).

Almost surely, 2^54431009 is an apocalyptic number.

It is an amenable number.

54431009 is a deficient number, since it is larger than the sum of its proper divisors (1755871).

54431009 is a wasteful number, since it uses less digits than its factorization.

54431009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755870.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 54431009 is about 7377.7373902844. The cubic root of 54431009 is about 378.9792759070.

The spelling of 54431009 in words is "fifty-four million, four hundred thirty-one thousand, nine".