5271451517221 has 16 divisors (see below), whose sum is σ = 5700430028160. Its totient is φ = 4859739438400.

The previous prime is 5271451517119. The next prime is 5271451517231. The reversal of 5271451517221 is 1227151541725.

It is a cyclic number.

It is not a de Polignac number, because 5271451517221 - 2¹³ = 5271451509029 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 (5271451517231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6643330 + ... + 7394371.

It is an arithmetic number, because the mean of its divisors is an integer number (356276876760).

Almost surely, 2^{5271451517221} is an apocalyptic number.

It is an amenable number.

5271451517221 is a deficient number, since it is larger than the sum of its proper divisors (428978510939).

5271451517221 is a wasteful number, since it uses less digits than its factorization.

5271451517221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14038316.

The product of its digits is 196000, while the sum is 43.

The spelling of 5271451517221 in words is "five trillion, two hundred seventy-one billion, four hundred fifty-one million, five hundred seventeen thousand, two hundred twenty-one".