8181151 has 8 divisors (see below), whose sum is σ = 8946000. Its totient is φ = 7419840.

The previous prime is 8181139. The next prime is 8181167. The reversal of 8181151 is 1511818.

8181151 is nontrivially palindromic in base 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 8181151 - 2⁵ = 8181119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8181751) 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, 7275 + ... + 8323.

It is an arithmetic number, because the mean of its divisors is an integer number (1118250).

Almost surely, 2^8181151 is an apocalyptic number.

8181151 is a deficient number, since it is larger than the sum of its proper divisors (764849).

8181151 is a wasteful number, since it uses less digits than its factorization.

8181151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769.

The product of its digits is 320, while the sum is 25.

The square root of 8181151 is about 2860.2711409935. The cubic root of 8181151 is about 201.4983385431.

Adding to 8181151 its reverse (1511818), we get a palindrome (9692969).

The spelling of 8181151 in words is "eight million, one hundred eighty-one thousand, one hundred fifty-one".