54544133250021 has 4 divisors (see below), whose sum is σ = 72725511000032. Its totient is φ = 36362755500012.

The previous prime is 54544133249999. The next prime is 54544133250023. The reversal of 54544133250021 is 12005233144545.

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 not a de Polignac number, because 54544133250021 - 2²¹ = 54544131152869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54544133250023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9090688875001 + ... + 9090688875006.

It is an arithmetic number, because the mean of its divisors is an integer number (18181377750008).

Almost surely, 2^{54544133250021} is an apocalyptic number.

It is an amenable number.

54544133250021 is a deficient number, since it is larger than the sum of its proper divisors (18181377750011).

54544133250021 is a wasteful number, since it uses less digits than its factorization.

54544133250021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18181377750010.

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 54544133250021 its reverse (12005233144545), we get a palindrome (66549366394566).

The spelling of 54544133250021 in words is "fifty-four trillion, five hundred forty-four billion, one hundred thirty-three million, two hundred fifty thousand, twenty-one".