4851491 has 2 divisors, whose sum is σ = 4851492. Its totient is φ = 4851490.

The previous prime is 4851463. The next prime is 4851493. The reversal of 4851491 is 1941584.

4851491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4851491 - 2¹⁰ = 4850467 is a prime.

It is a Sophie Germain prime.

Together with 4851493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4851493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2425745 + 2425746.

It is an arithmetic number, because the mean of its divisors is an integer number (2425746).

Almost surely, 2^4851491 is an apocalyptic number.

4851491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4851491 is an equidigital number, since it uses as much as digits as its factorization.

4851491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 32.

The square root of 4851491 is about 2202.6100426539. The cubic root of 4851491 is about 169.2875721958.

The spelling of 4851491 in words is "four million, eight hundred fifty-one thousand, four hundred ninety-one".