4503991 has 2 divisors, whose sum is σ = 4503992. Its totient is φ = 4503990.

The previous prime is 4503977. The next prime is 4504009. The reversal of 4503991 is 1993054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4503991 - 2⁹ = 4503479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4503901) 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, 2251995 + 2251996.

It is an arithmetic number, because the mean of its divisors is an integer number (2251996).

Almost surely, 2^4503991 is an apocalyptic number.

4503991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4503991 is an equidigital number, since it uses as much as digits as its factorization.

4503991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 4503991 is about 2122.2608228019. The cubic root of 4503991 is about 165.1451553994.

The spelling of 4503991 in words is "four million, five hundred three thousand, nine hundred ninety-one".