4196581 has 2 divisors, whose sum is σ = 4196582. Its totient is φ = 4196580.

The previous prime is 4196573. The next prime is 4196629. The reversal of 4196581 is 1856914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3094081 + 1102500 = 1759^2 + 1050^2 .

It is a cyclic number.

It is not a de Polignac number, because 4196581 - 2³ = 4196573 is a prime.

It is a super-2 number, since 2×4196581² = 35222584179122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4196081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2098290 + 2098291.

It is an arithmetic number, because the mean of its divisors is an integer number (2098291).

Almost surely, 2^4196581 is an apocalyptic number.

It is an amenable number.

4196581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4196581 is an equidigital number, since it uses as much as digits as its factorization.

4196581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 4196581 is about 2048.5558327759. Note that the first 3 decimals coincide. The cubic root of 4196581 is about 161.2990724591.

The spelling of 4196581 in words is "four million, one hundred ninety-six thousand, five hundred eighty-one".