5558778427 has 2 divisors, whose sum is σ = 5558778428. Its totient is φ = 5558778426.

The previous prime is 5558778389. The next prime is 5558778457. The reversal of 5558778427 is 7248778555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5558778427 is a prime.

It is not a weakly prime, because it can be changed into another prime (5558778457) 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, 2779389213 + 2779389214.

It is an arithmetic number, because the mean of its divisors is an integer number (2779389214).

Almost surely, 2^5558778427 is an apocalyptic number.

5558778427 is a deficient number, since it is larger than the sum of its proper divisors (1).

5558778427 is an equidigital number, since it uses as much as digits as its factorization.

5558778427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21952000, while the sum is 58.

The square root of 5558778427 is about 74557.2157943146. The cubic root of 5558778427 is about 1771.4400302951.

The spelling of 5558778427 in words is "five billion, five hundred fifty-eight million, seven hundred seventy-eight thousand, four hundred twenty-seven".