491093503 has 2 divisors, whose sum is σ = 491093504. Its totient is φ = 491093502.

The previous prime is 491093483. The next prime is 491093507. The reversal of 491093503 is 305390194.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491093503 is a prime.

It is a super-2 number, since 2×491093503² = 482345657377622018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491093507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245546751 + 245546752.

It is an arithmetic number, because the mean of its divisors is an integer number (245546752).

Almost surely, 2^491093503 is an apocalyptic number.

491093503 is a deficient number, since it is larger than the sum of its proper divisors (1).

491093503 is an equidigital number, since it uses as much as digits as its factorization.

491093503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 491093503 is about 22160.6295713818. The cubic root of 491093503 is about 788.9595355682.

The spelling of 491093503 in words is "four hundred ninety-one million, ninety-three thousand, five hundred three".