54005020513 has 4 divisors (see below), whose sum is σ = 55464615700. Its totient is φ = 52545425328.

The previous prime is 54005020493. The next prime is 54005020541. The reversal of 54005020513 is 31502050045.

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 23656593249 + 30348427264 = 153807^2 + 174208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54005020513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54005020583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729797538 + ... + 729797611.

It is an arithmetic number, because the mean of its divisors is an integer number (13866153925).

Almost surely, 2^54005020513 is an apocalyptic number.

It is an amenable number.

54005020513 is a deficient number, since it is larger than the sum of its proper divisors (1459595187).

54005020513 is a wasteful number, since it uses less digits than its factorization.

54005020513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459595186.

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 54005020513 its reverse (31502050045), we get a palindrome (85507070558).

The spelling of 54005020513 in words is "fifty-four billion, five million, twenty thousand, five hundred thirteen".