5021521117521 has 8 divisors (see below), whose sum is σ = 6695393009280. Its totient is φ = 3347664985392.

The previous prime is 5021521117513. The next prime is 5021521117531. The reversal of 5021521117521 is 1257111251205.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5021521117521 - 2³ = 5021521117513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5021521117531) 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 7 ways as a sum of consecutive naturals, for example, 3175230 + ... + 4486103.

It is an arithmetic number, because the mean of its divisors is an integer number (836924126160).

Almost surely, 2^{5021521117521} is an apocalyptic number.

It is an amenable number.

5021521117521 is a deficient number, since it is larger than the sum of its proper divisors (1673871891759).

5021521117521 is a wasteful number, since it uses less digits than its factorization.

5021521117521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7879815.

The product of its (nonzero) digits is 7000, while the sum is 33.

Adding to 5021521117521 its reverse (1257111251205), we get a palindrome (6278632368726).

The spelling of 5021521117521 in words is "five trillion, twenty-one billion, five hundred twenty-one million, one hundred seventeen thousand, five hundred twenty-one".