5549559391 has 2 divisors, whose sum is σ = 5549559392. Its totient is φ = 5549559390.

The previous prime is 5549559361. The next prime is 5549559397. The reversal of 5549559391 is 1939559455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5549559391 - 2¹³ = 5549551199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5549559397) 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, 2774779695 + 2774779696.

It is an arithmetic number, because the mean of its divisors is an integer number (2774779696).

Almost surely, 2^5549559391 is an apocalyptic number.

5549559391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5549559391 is an equidigital number, since it uses as much as digits as its factorization.

5549559391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5467500, while the sum is 55.

The square root of 5549559391 is about 74495.3648960793. The cubic root of 5549559391 is about 1770.4601983612.

The spelling of 5549559391 in words is "five billion, five hundred forty-nine million, five hundred fifty-nine thousand, three hundred ninety-one".