54431993 has 12 divisors (see below), whose sum is σ = 69075792. Its totient is φ = 42414120.

The previous prime is 54431963. The next prime is 54432013. The reversal of 54431993 is 39913445.

It is not a de Polignac number, because 54431993 - 2⁶ = 54431929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54431933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49955 + ... + 51032.

It is an arithmetic number, because the mean of its divisors is an integer number (5756316).

Almost surely, 2^54431993 is an apocalyptic number.

It is an amenable number.

54431993 is a deficient number, since it is larger than the sum of its proper divisors (14643799).

54431993 is a wasteful number, since it uses less digits than its factorization.

54431993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101012 (or 101005 counting only the distinct ones).

The product of its digits is 58320, while the sum is 38.

The square root of 54431993 is about 7377.8040770950. The cubic root of 54431993 is about 378.9815596136.

The spelling of 54431993 in words is "fifty-four million, four hundred thirty-one thousand, nine hundred ninety-three".