506506161 has 64 divisors (see below), whose sum is σ = 858009600. Its totient is φ = 259117056.

The previous prime is 506506151. The next prime is 506506163. The reversal of 506506161 is 161605605.

It is not a de Polignac number, because 506506161 - 2²² = 502311857 is a prime.

It is a super-2 number, since 2×506506161² = 513096982261915842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (506506163) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 889885 + ... + 890453.

It is an arithmetic number, because the mean of its divisors is an integer number (13406400).

Almost surely, 2^506506161 is an apocalyptic number.

It is an amenable number.

506506161 is a deficient number, since it is larger than the sum of its proper divisors (351503439).

506506161 is a wasteful number, since it uses less digits than its factorization.

506506161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 506506161 is about 22505.6917467560. The cubic root of 506506161 is about 797.1283297422.

The spelling of 506506161 in words is "five hundred six million, five hundred six thousand, one hundred sixty-one".