7859161 has 2 divisors, whose sum is σ = 7859162. Its totient is φ = 7859160.

The previous prime is 7859149. The next prime is 7859171. The reversal of 7859161 is 1619587.

7859161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6859161 + 1000000 = 2619^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 7859161 - 2⁵ = 7859129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7859161.

It is not a weakly prime, because it can be changed into another prime (7859171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3929580 + 3929581.

It is an arithmetic number, because the mean of its divisors is an integer number (3929581).

Almost surely, 2^7859161 is an apocalyptic number.

It is an amenable number.

7859161 is a deficient number, since it is larger than the sum of its proper divisors (1).

7859161 is an equidigital number, since it uses as much as digits as its factorization.

7859161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 37.

The square root of 7859161 is about 2803.4195190874. The cubic root of 7859161 is about 198.8193861345.

The spelling of 7859161 in words is "seven million, eight hundred fifty-nine thousand, one hundred sixty-one".