55055000491 has 2 divisors, whose sum is σ = 55055000492. Its totient is φ = 55055000490.

The previous prime is 55055000489. The next prime is 55055000509. The reversal of 55055000491 is 19400055055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55055000491 - 2¹ = 55055000489 is a prime.

Together with 55055000489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55055000471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27527500245 + 27527500246.

It is an arithmetic number, because the mean of its divisors is an integer number (27527500246).

Almost surely, 2^55055000491 is an apocalyptic number.

55055000491 is a deficient number, since it is larger than the sum of its proper divisors (1).

55055000491 is an equidigital number, since it uses as much as digits as its factorization.

55055000491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 55055000491 in words is "fifty-five billion, fifty-five million, four hundred ninety-one", and thus it is an aban number.