54138433 has 4 divisors (see below), whose sum is σ = 54746820. Its totient is φ = 53530048.

The previous prime is 54138397. The next prime is 54138439. The reversal of 54138433 is 33483145.

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 11992369 + 42146064 = 3463^2 + 6492^2 .

It is a cyclic number.

It is not a de Polignac number, because 54138433 - 2⁹ = 54137921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54138395 and 54138404.

It is not an unprimeable number, because it can be changed into a prime (54138439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304060 + ... + 304237.

It is an arithmetic number, because the mean of its divisors is an integer number (13686705).

Almost surely, 2^54138433 is an apocalyptic number.

It is an amenable number.

54138433 is a deficient number, since it is larger than the sum of its proper divisors (608387).

54138433 is an equidigital number, since it uses as much as digits as its factorization.

54138433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608386.

The product of its digits is 17280, while the sum is 31.

The square root of 54138433 is about 7357.8823719872. The cubic root of 54138433 is about 378.2990294518.

The spelling of 54138433 in words is "fifty-four million, one hundred thirty-eight thousand, four hundred thirty-three".