54523105153021 has 4 divisors (see below), whose sum is σ = 54531256319100. Its totient is φ = 54514953986944.

The previous prime is 54523105153019. The next prime is 54523105153031. The reversal of 54523105153021 is 12035150132545.

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 26959408140025 + 27563697012996 = 5192245^2 + 5250114^2 .

It is a cyclic number.

It is not a de Polignac number, because 54523105153021 - 2¹ = 54523105153019 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 (54523105153001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4075573006 + ... + 4075586383.

It is an arithmetic number, because the mean of its divisors is an integer number (13632814079775).

Almost surely, 2^{54523105153021} is an apocalyptic number.

It is an amenable number.

54523105153021 is a deficient number, since it is larger than the sum of its proper divisors (8151166079).

54523105153021 is an equidigital number, since it uses as much as digits as its factorization.

54523105153021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8151166078.

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 54523105153021 its reverse (12035150132545), we get a palindrome (66558255285566).

The spelling of 54523105153021 in words is "fifty-four trillion, five hundred twenty-three billion, one hundred five million, one hundred fifty-three thousand, twenty-one".