8081181 has 16 divisors (see below), whose sum is σ = 12033600. Its totient is φ = 5359824.

The previous prime is 8081153. The next prime is 8081197. The reversal of 8081181 is 1811808.

It is not a de Polignac number, because 8081181 - 2¹¹ = 8079133 is a prime.

It is a super-2 number, since 2×8081181² = 130610972709522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5530 + ... + 6836.

It is an arithmetic number, because the mean of its divisors is an integer number (752100).

Almost surely, 2^8081181 is an apocalyptic number.

It is an amenable number.

8081181 is a deficient number, since it is larger than the sum of its proper divisors (3952419).

8081181 is a wasteful number, since it uses less digits than its factorization.

8081181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545 (or 1539 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 27.

The square root of 8081181 is about 2842.7418102951. The cubic root of 8081181 is about 200.6742328296.

Adding to 8081181 its reverse (1811808), we get a palindrome (9892989).

The spelling of 8081181 in words is "eight million, eighty-one thousand, one hundred eighty-one".