54015321533 has 4 divisors (see below), whose sum is σ = 54140068668. Its totient is φ = 53890574400.

The previous prime is 54015321401. The next prime is 54015321551. The reversal of 54015321533 is 33512351045.

54015321533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 26018335204 + 27996986329 = 161302^2 + 167323^2 .

It is a cyclic number.

It is not a de Polignac number, because 54015321533 - 2⁸ = 54015321277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54015321533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54015321553) 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, 62372918 + ... + 62373783.

It is an arithmetic number, because the mean of its divisors is an integer number (13535017167).

Almost surely, 2^54015321533 is an apocalyptic number.

It is an amenable number.

54015321533 is a deficient number, since it is larger than the sum of its proper divisors (124747135).

54015321533 is a wasteful number, since it uses less digits than its factorization.

54015321533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124747134.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 54015321533 its reverse (33512351045), we get a palindrome (87527672578).

The spelling of 54015321533 in words is "fifty-four billion, fifteen million, three hundred twenty-one thousand, five hundred thirty-three".