54431509 has 8 divisors (see below), whose sum is σ = 59725152. Its totient is φ = 49195440.

The previous prime is 54431497. The next prime is 54431513. The reversal of 54431509 is 90513445.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54431509 - 2⁹ = 54430997 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 (54431519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12399 + ... + 16204.

It is an arithmetic number, because the mean of its divisors is an integer number (7465644).

Almost surely, 2^54431509 is an apocalyptic number.

It is an amenable number.

54431509 is a deficient number, since it is larger than the sum of its proper divisors (5293643).

54431509 is a wasteful number, since it uses less digits than its factorization.

54431509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28787.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 54431509 is about 7377.7712759342. The cubic root of 54431509 is about 378.9804363305.

The spelling of 54431509 in words is "fifty-four million, four hundred thirty-one thousand, five hundred nine".