5271198136281 has 135 divisors (see below), whose sum is σ = 10071307275183. Its totient is φ = 2737458218880.

The previous prime is 5271198136213. The next prime is 5271198136307. The reversal of 5271198136281 is 1826318911725.

The square root of 5271198136281 is 2295909.

It is a perfect power (a square), and thus also a powerful number.

5271198136281 is a `hidden beast` number, since 5 + 2 + 7 + 1 + 1 + 9 + 8 + 1 + 3 + 628 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4871753912025 + 399444224256 = 2207205^2 + 632016^2 .

It is not a de Polignac number, because 5271198136281 - 2¹¹ = 5271198134233 is a prime.

It is a super-2 number, since 2×5271198136281² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5271198136201) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 1591063281 + ... + 1591066593.

Almost surely, 2^{5271198136281} is an apocalyptic number.

5271198136281 is the 2295909-th square number.

5271198136281 is the 1147955-th centered octagonal number.

It is an amenable number.

5271198136281 is a deficient number, since it is larger than the sum of its proper divisors (4800109138902).

5271198136281 is an frugal number, since it uses more digits than its factorization.

5271198136281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674 (or 3334 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The spelling of 5271198136281 in words is "five trillion, two hundred seventy-one billion, one hundred ninety-eight million, one hundred thirty-six thousand, two hundred eighty-one".