8182561 has 4 divisors (see below), whose sum is σ = 8196400. Its totient is φ = 8168724.

The previous prime is 8182547. The next prime is 8182579. The reversal of 8182561 is 1652818.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8182561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8182541) 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 3 ways as a sum of consecutive naturals, for example, 5991 + ... + 7228.

It is an arithmetic number, because the mean of its divisors is an integer number (2049100).

Almost surely, 2^8182561 is an apocalyptic number.

It is an amenable number.

8182561 is a deficient number, since it is larger than the sum of its proper divisors (13839).

8182561 is a wasteful number, since it uses less digits than its factorization.

8182561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13838.

The product of its digits is 3840, while the sum is 31.

The square root of 8182561 is about 2860.5176105034. The cubic root of 8182561 is about 201.5099137822.

The spelling of 8182561 in words is "eight million, one hundred eighty-two thousand, five hundred sixty-one".