8091145 has 16 divisors (see below), whose sum is σ = 10296720. Its totient is φ = 6092800.

The previous prime is 8091143. The next prime is 8091151. The reversal of 8091145 is 5411908.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2005056 + 6086089 = 1416^2 + 2467^2 .

It is not a de Polignac number, because 8091145 - 2¹ = 8091143 is a prime.

It is a super-2 number, since 2×8091145² = 130933254822050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8091143) 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 15 ways as a sum of consecutive naturals, for example, 5265 + ... + 6625.

It is an arithmetic number, because the mean of its divisors is an integer number (643545).

Almost surely, 2^8091145 is an apocalyptic number.

It is an amenable number.

8091145 is a deficient number, since it is larger than the sum of its proper divisors (2205575).

8091145 is a wasteful number, since it uses less digits than its factorization.

8091145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 8091145 is about 2844.4938038252. The cubic root of 8091145 is about 200.7566752690.

The spelling of 8091145 in words is "eight million, ninety-one thousand, one hundred forty-five".