520271111 has 8 divisors (see below), whose sum is σ = 551170944. Its totient is φ = 489404160.

The previous prime is 520271093. The next prime is 520271123. The reversal of 520271111 is 111172025.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-520271111 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 (520271131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29291 + ... + 43571.

It is an arithmetic number, because the mean of its divisors is an integer number (68896368).

Almost surely, 2^520271111 is an apocalyptic number.

520271111 is a deficient number, since it is larger than the sum of its proper divisors (30899833).

520271111 is a wasteful number, since it uses less digits than its factorization.

520271111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16441.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 520271111 is about 22809.4522292842. The cubic root of 520271111 is about 804.2848791018.

The spelling of 520271111 in words is "five hundred twenty million, two hundred seventy-one thousand, one hundred eleven".