521427271 has 2 divisors, whose sum is σ = 521427272. Its totient is φ = 521427270.

The previous prime is 521427251. The next prime is 521427341. The reversal of 521427271 is 172724125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521427271 - 2⁵ = 521427239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521427251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260713635 + 260713636.

It is an arithmetic number, because the mean of its divisors is an integer number (260713636).

Almost surely, 2^521427271 is an apocalyptic number.

521427271 is a deficient number, since it is larger than the sum of its proper divisors (1).

521427271 is an equidigital number, since it uses as much as digits as its factorization.

521427271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7840, while the sum is 31.

The square root of 521427271 is about 22834.7820440660. The cubic root of 521427271 is about 804.8802059308.

The spelling of 521427271 in words is "five hundred twenty-one million, four hundred twenty-seven thousand, two hundred seventy-one".