6563161 has 8 divisors (see below), whose sum is σ = 7220448. Its totient is φ = 5965300.

The previous prime is 6563159. The next prime is 6563177. The reversal of 6563161 is 1613656.

It is not a de Polignac number, because 6563161 - 2¹ = 6563159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6563191) 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, 1135 + ... + 3796.

It is an arithmetic number, because the mean of its divisors is an integer number (902556).

Almost surely, 2^6563161 is an apocalyptic number.

It is an amenable number.

6563161 is a deficient number, since it is larger than the sum of its proper divisors (657287).

6563161 is an equidigital number, since it uses as much as digits as its factorization.

6563161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4964 (or 4942 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 6563161 is about 2561.8667022310. The cubic root of 6563161 is about 187.2280953674.

It can be divided in two parts, 6563 and 161, that added together give a square (6724 = 82²).

The spelling of 6563161 in words is "six million, five hundred sixty-three thousand, one hundred sixty-one".