520771081 has 16 divisors (see below), whose sum is σ = 560355840. Its totient is φ = 482227200.

The previous prime is 520771079. The next prime is 520771093. The reversal of 520771081 is 180177025.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 520771081 - 2¹ = 520771079 is a prime.

It is a super-2 number, since 2×520771081² = 542405037611817122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520771021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538060 + ... + 539026.

It is an arithmetic number, because the mean of its divisors is an integer number (35022240).

Almost surely, 2^520771081 is an apocalyptic number.

It is an amenable number.

520771081 is a deficient number, since it is larger than the sum of its proper divisors (39584759).

520771081 is a wasteful number, since it uses less digits than its factorization.

520771081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 520771081 is about 22820.4093083363. The cubic root of 520771081 is about 804.5424304451.

The spelling of 520771081 in words is "five hundred twenty million, seven hundred seventy-one thousand, eighty-one".