520285161 has 16 divisors (see below), whose sum is σ = 757183680. Its totient is φ = 315155520.

The previous prime is 520285111. The next prime is 520285163. The reversal of 520285161 is 161582025.

It is not a de Polignac number, because 520285161 - 2¹⁵ = 520252393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520285163) 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 15 ways as a sum of consecutive naturals, for example, 89211 + ... + 94863.

It is an arithmetic number, because the mean of its divisors is an integer number (47323980).

Almost surely, 2^520285161 is an apocalyptic number.

It is an amenable number.

520285161 is a deficient number, since it is larger than the sum of its proper divisors (236898519).

520285161 is a wasteful number, since it uses less digits than its factorization.

520285161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8456.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 520285161 is about 22809.7602135577. The cubic root of 520285161 is about 804.2921189815.

The spelling of 520285161 in words is "five hundred twenty million, two hundred eighty-five thousand, one hundred sixty-one".