55550555077 has 2 divisors, whose sum is σ = 55550555078. Its totient is φ = 55550555076.

The previous prime is 55550555003. The next prime is 55550555083. The reversal of 55550555077 is 77055505555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51025840321 + 4524714756 = 225889^2 + 67266^2 .

It is a cyclic number.

It is not a de Polignac number, because 55550555077 - 2²⁷ = 55416337349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55550555077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55550595077) 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, 27775277538 + 27775277539.

It is an arithmetic number, because the mean of its divisors is an integer number (27775277539).

Almost surely, 2^55550555077 is an apocalyptic number.

It is an amenable number.

55550555077 is a deficient number, since it is larger than the sum of its proper divisors (1).

55550555077 is an equidigital number, since it uses as much as digits as its factorization.

55550555077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3828125, while the sum is 49.

The spelling of 55550555077 in words is "fifty-five billion, five hundred fifty million, five hundred fifty-five thousand, seventy-seven".