8133481 has 2 divisors, whose sum is σ = 8133482. Its totient is φ = 8133480.

The previous prime is 8133469. The next prime is 8133511. The reversal of 8133481 is 1843318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5856400 + 2277081 = 2420^2 + 1509^2 .

It is a cyclic number.

It is not a de Polignac number, because 8133481 - 2⁵ = 8133449 is a prime.

It is a super-2 number, since 2×8133481² = 132307026354722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8133431) 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 as a sum of consecutive naturals, namely, 4066740 + 4066741.

It is an arithmetic number, because the mean of its divisors is an integer number (4066741).

Almost surely, 2^8133481 is an apocalyptic number.

It is an amenable number.

8133481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8133481 is an equidigital number, since it uses as much as digits as its factorization.

8133481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 28.

The square root of 8133481 is about 2851.9258405506. The cubic root of 8133481 is about 201.1062118626.

Adding to 8133481 its reverse (1843318), we get a palindrome (9976799).

The spelling of 8133481 in words is "eight million, one hundred thirty-three thousand, four hundred eighty-one".