520501161 has 8 divisors (see below), whose sum is σ = 694217440. Its totient is φ = 346892832.

The previous prime is 520501123. The next prime is 520501183. The reversal of 520501161 is 161105025.

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

It is not a de Polignac number, because 520501161 - 2¹¹ = 520499113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520501361) 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, 14971 + ... + 35568.

It is an arithmetic number, because the mean of its divisors is an integer number (86777180).

Almost surely, 2^520501161 is an apocalyptic number.

It is an amenable number.

520501161 is a deficient number, since it is larger than the sum of its proper divisors (173716279).

520501161 is a wasteful number, since it uses less digits than its factorization.

520501161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53975.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 520501161 is about 22814.4945374646. The cubic root of 520501161 is about 804.4034060698.

Adding to 520501161 its reverse (161105025), we get a palindrome (681606186).

The spelling of 520501161 in words is "five hundred twenty million, five hundred one thousand, one hundred sixty-one".