5491359491 has 2 divisors, whose sum is σ = 5491359492. Its totient is φ = 5491359490.

The previous prime is 5491359439. The next prime is 5491359493. The reversal of 5491359491 is 1949531945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5491359491 - 2²⁶ = 5424250627 is a prime.

Together with 5491359493, 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 (5491359493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2745679745 + 2745679746.

It is an arithmetic number, because the mean of its divisors is an integer number (2745679746).

Almost surely, 2^5491359491 is an apocalyptic number.

5491359491 is a deficient number, since it is larger than the sum of its proper divisors (1).

5491359491 is an equidigital number, since it uses as much as digits as its factorization.

5491359491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800, while the sum is 50.

The square root of 5491359491 is about 74103.7076737730. The cubic root of 5491359491 is about 1764.2493193458.

The spelling of 5491359491 in words is "five billion, four hundred ninety-one million, three hundred fifty-nine thousand, four hundred ninety-one".