8137081 has 4 divisors (see below), whose sum is σ = 8417700. Its totient is φ = 7856464.

The previous prime is 8137069. The next prime is 8137117. The reversal of 8137081 is 1807318.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3367225 + 4769856 = 1835^2 + 2184^2 .

It is a cyclic number.

It is not a de Polignac number, because 8137081 - 2¹¹ = 8135033 is a prime.

It is a super-2 number, since 2×8137081² = 132424174401122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8137021) 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 3 ways as a sum of consecutive naturals, for example, 140266 + ... + 140323.

It is an arithmetic number, because the mean of its divisors is an integer number (2104425).

Almost surely, 2^8137081 is an apocalyptic number.

It is an amenable number.

8137081 is a deficient number, since it is larger than the sum of its proper divisors (280619).

8137081 is a wasteful number, since it uses less digits than its factorization.

8137081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280618.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 8137081 is about 2852.5569231831. The cubic root of 8137081 is about 201.1358783557.

The spelling of 8137081 in words is "eight million, one hundred thirty-seven thousand, eighty-one".