5051221153521 has 32 divisors (see below), whose sum is σ = 6825602125440. Its totient is φ = 3322276838400.

The previous prime is 5051221153481. The next prime is 5051221153609. The reversal of 5051221153521 is 1253511221505.

It is not a de Polignac number, because 5051221153521 - 2²⁵ = 5051187599089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5051221152521) 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 31 ways as a sum of consecutive naturals, for example, 861833131 + ... + 861838991.

It is an arithmetic number, because the mean of its divisors is an integer number (213300066420).

Almost surely, 2^{5051221153521} is an apocalyptic number.

It is an amenable number.

5051221153521 is a deficient number, since it is larger than the sum of its proper divisors (1774380971919).

5051221153521 is a wasteful number, since it uses less digits than its factorization.

5051221153521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10177.

The product of its (nonzero) digits is 15000, while the sum is 33.

The spelling of 5051221153521 in words is "five trillion, fifty-one billion, two hundred twenty-one million, one hundred fifty-three thousand, five hundred twenty-one".