8251161 has 4 divisors (see below), whose sum is σ = 11001552. Its totient is φ = 5500772.

The previous prime is 8251157. The next prime is 8251183. The reversal of 8251161 is 1611528.

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 not a de Polignac number, because 8251161 - 2² = 8251157 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8251121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375191 + ... + 1375196.

It is an arithmetic number, because the mean of its divisors is an integer number (2750388).

Almost surely, 2^8251161 is an apocalyptic number.

It is an amenable number.

8251161 is a deficient number, since it is larger than the sum of its proper divisors (2750391).

8251161 is a wasteful number, since it uses less digits than its factorization.

8251161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750390.

The product of its digits is 480, while the sum is 24.

The square root of 8251161 is about 2872.4834203177. The cubic root of 8251161 is about 202.0714791313.

Adding to 8251161 its reverse (1611528), we get a palindrome (9862689).

The spelling of 8251161 in words is "eight million, two hundred fifty-one thousand, one hundred sixty-one".