5521955779 has 2 divisors, whose sum is σ = 5521955780. Its totient is φ = 5521955778.

The previous prime is 5521955771. The next prime is 5521955797. The reversal of 5521955779 is 9775591255.

It is a happy number.

Together with next prime (5521955797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5521955779 - 2³ = 5521955771 is a prime.

It is not a weakly prime, because it can be changed into another prime (5521955771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2760977889 + 2760977890.

It is an arithmetic number, because the mean of its divisors is an integer number (2760977890).

Almost surely, 2^5521955779 is an apocalyptic number.

5521955779 is a deficient number, since it is larger than the sum of its proper divisors (1).

5521955779 is an equidigital number, since it uses as much as digits as its factorization.

5521955779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4961250, while the sum is 55.

The square root of 5521955779 is about 74309.8632686133. The cubic root of 5521955779 is about 1767.5198838746.

The spelling of 5521955779 in words is "five billion, five hundred twenty-one million, nine hundred fifty-five thousand, seven hundred seventy-nine".