8072161 has 8 divisors (see below), whose sum is σ = 8578440. Its totient is φ = 7569408.

The previous prime is 8072159. The next prime is 8072167. The reversal of 8072161 is 1612708.

It can be written as a sum of positive squares in 4 ways, for example, as 57600 + 8014561 = 240^2 + 2831^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8072161 - 2¹ = 8072159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8072167) 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, 5025 + ... + 6433.

It is an arithmetic number, because the mean of its divisors is an integer number (1072305).

Almost surely, 2^8072161 is an apocalyptic number.

It is an amenable number.

8072161 is a deficient number, since it is larger than the sum of its proper divisors (506279).

8072161 is a wasteful number, since it uses less digits than its factorization.

8072161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 8072161 is about 2841.1548708228. The cubic root of 8072161 is about 200.5995426140.

Adding to 8072161 its reverse (1612708), we get a palindrome (9684869).

The spelling of 8072161 in words is "eight million, seventy-two thousand, one hundred sixty-one".