521271117 has 6 divisors (see below), whose sum is σ = 752947182. Its totient is φ = 347514072.

The previous prime is 521271083. The next prime is 521271161. The reversal of 521271117 is 711172125.

521271117 is a `hidden beast` number, since 521 + 27 + 1 + 117 = 666.

It can be written as a sum of positive squares in only one way, i.e., 286997481 + 234273636 = 16941^2 + 15306^2 .

It is not a de Polignac number, because 521271117 - 2⁶ = 521271053 is a prime.

It is a super-3 number, since 3×521271117³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521171117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28959498 + ... + 28959515.

It is an arithmetic number, because the mean of its divisors is an integer number (125491197).

Almost surely, 2^521271117 is an apocalyptic number.

It is an amenable number.

521271117 is a deficient number, since it is larger than the sum of its proper divisors (231676065).

521271117 is a wasteful number, since it uses less digits than its factorization.

521271117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57919019 (or 57919016 counting only the distinct ones).

The product of its digits is 980, while the sum is 27.

The square root of 521271117 is about 22831.3625743187. The cubic root of 521271117 is about 804.7998509646.

The spelling of 521271117 in words is "five hundred twenty-one million, two hundred seventy-one thousand, one hundred seventeen".