4155841 has 2 divisors, whose sum is σ = 4155842. Its totient is φ = 4155840.

The previous prime is 4155839. The next prime is 4155857. The reversal of 4155841 is 1485514.

4155841 = T₁₆₆₃ + T₁₆₆₄ + T₁₆₆₅.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2989441 + 1166400 = 1729^2 + 1080^2 .

It is a cyclic number.

It is not a de Polignac number, because 4155841 - 2¹ = 4155839 is a prime.

Together with 4155839, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (4153841) 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 as a sum of consecutive naturals, namely, 2077920 + 2077921.

It is an arithmetic number, because the mean of its divisors is an integer number (2077921).

Almost surely, 2^4155841 is an apocalyptic number.

4155841 is the 1665-th centered triangular number.

It is an amenable number.

4155841 is a deficient number, since it is larger than the sum of its proper divisors (1).

4155841 is an equidigital number, since it uses as much as digits as its factorization.

4155841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3200, while the sum is 28.

The square root of 4155841 is about 2038.5879917237. The cubic root of 4155841 is about 160.7754156825.

The spelling of 4155841 in words is "four million, one hundred fifty-five thousand, eight hundred forty-one".