505505555057 has 2 divisors, whose sum is σ = 505505555058. Its totient is φ = 505505555056.

The previous prime is 505505555053. The next prime is 505505555081. The reversal of 505505555057 is 750555505505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 486679245376 + 18826309681 = 697624^2 + 137209^2 .

It is a cyclic number.

It is not a de Polignac number, because 505505555057 - 2² = 505505555053 is a prime.

It is not a weakly prime, because it can be changed into another prime (505505555053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252752777528 + 252752777529.

It is an arithmetic number, because the mean of its divisors is an integer number (252752777529).

Almost surely, 2^505505555057 is an apocalyptic number.

It is an amenable number.

505505555057 is a deficient number, since it is larger than the sum of its proper divisors (1).

505505555057 is an equidigital number, since it uses as much as digits as its factorization.

505505555057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2734375, while the sum is 47.

The spelling of 505505555057 in words is "five hundred five billion, five hundred five million, five hundred fifty-five thousand, fifty-seven".