4491481 has 2 divisors, whose sum is σ = 4491482. Its totient is φ = 4491480.

The previous prime is 4491469. The next prime is 4491503. The reversal of 4491481 is 1841944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2576025 + 1915456 = 1605^2 + 1384^2 .

It is a cyclic number.

It is not a de Polignac number, because 4491481 - 2¹⁹ = 3967193 is a prime.

It is a super-2 number, since 2×4491481² = 40346803146722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4491401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245740 + 2245741.

It is an arithmetic number, because the mean of its divisors is an integer number (2245741).

Almost surely, 2^4491481 is an apocalyptic number.

It is an amenable number.

4491481 is a deficient number, since it is larger than the sum of its proper divisors (1).

4491481 is an equidigital number, since it uses as much as digits as its factorization.

4491481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 4491481 is about 2119.3114447858. The cubic root of 4491481 is about 164.9921147135.

The spelling of 4491481 in words is "four million, four hundred ninety-one thousand, four hundred eighty-one".