8181097 has 8 divisors (see below), whose sum is σ = 8699400. Its totient is φ = 7666944.

The previous prime is 8181091. The next prime is 8181119. The reversal of 8181097 is 7901818.

It can be written as a sum of positive squares in 4 ways, for example, as 2247001 + 5934096 = 1499^2 + 2436^2 .

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 8181097 - 2¹⁹ = 7656809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8181091) 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, 3679 + ... + 5467.

It is an arithmetic number, because the mean of its divisors is an integer number (1087425).

Almost surely, 2^8181097 is an apocalyptic number.

It is an amenable number.

8181097 is a deficient number, since it is larger than the sum of its proper divisors (518303).

8181097 is a wasteful number, since it uses less digits than its factorization.

8181097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075.

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 8181097 is about 2860.2617013134. The cubic root of 8181097 is about 201.4978952096.

The spelling of 8181097 in words is "eight million, one hundred eighty-one thousand, ninety-seven".