521286271 has 12 divisors (see below), whose sum is σ = 575890000. Its totient is φ = 471493440.

The previous prime is 521286257. The next prime is 521286301. The reversal of 521286271 is 172682125.

It is a happy number.

It is not a de Polignac number, because 521286271 - 2⁵ = 521286239 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 (521286221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13255 + ... + 34903.

Almost surely, 2^521286271 is an apocalyptic number.

521286271 is a deficient number, since it is larger than the sum of its proper divisors (54603729).

521286271 is a wasteful number, since it uses less digits than its factorization.

521286271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21870 (or 21859 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 521286271 is about 22831.6944399666. The cubic root of 521286271 is about 804.8076497334.

The spelling of 521286271 in words is "five hundred twenty-one million, two hundred eighty-six thousand, two hundred seventy-one".