6444161 has 2 divisors, whose sum is σ = 6444162. Its totient is φ = 6444160.

The previous prime is 6444121. The next prime is 6444167. The reversal of 6444161 is 1614446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4060225 + 2383936 = 2015^2 + 1544^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6444161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6444161.

It is not a weakly prime, because it can be changed into another prime (6444167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222080 + 3222081.

It is an arithmetic number, because the mean of its divisors is an integer number (3222081).

Almost surely, 2^6444161 is an apocalyptic number.

It is an amenable number.

6444161 is a deficient number, since it is larger than the sum of its proper divisors (1).

6444161 is an equidigital number, since it uses as much as digits as its factorization.

6444161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 6444161 is about 2538.5352075557. The cubic root of 6444161 is about 186.0896107305.

The spelling of 6444161 in words is "six million, four hundred forty-four thousand, one hundred sixty-one".