2606161 has 2 divisors, whose sum is σ = 2606162. Its totient is φ = 2606160.

The previous prime is 2606129. The next prime is 2606171. The reversal of 2606161 is 1616062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2461761 + 144400 = 1569^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 2606161 - 2⁵ = 2606129 is a prime.

It is not a weakly prime, because it can be changed into another prime (2606171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303080 + 1303081.

It is an arithmetic number, because the mean of its divisors is an integer number (1303081).

2^2606161 is an apocalyptic number.

It is an amenable number.

2606161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2606161 is an equidigital number, since it uses as much as digits as its factorization.

2606161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2606161 is about 1614.3608642432. The cubic root of 2606161 is about 137.6154138414.

Subtracting from 2606161 its reverse (1616062), we obtain a palindrome (990099).

The spelling of 2606161 in words is "two million, six hundred six thousand, one hundred sixty-one".