505555055 has 4 divisors (see below), whose sum is σ = 606666072. Its totient is φ = 404444040.

The previous prime is 505555033. The next prime is 505555067. The reversal of 505555055 is 550555505.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 505555055 - 2¹² = 505550959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50555501 + ... + 50555510.

It is an arithmetic number, because the mean of its divisors is an integer number (151666518).

Almost surely, 2^505555055 is an apocalyptic number.

505555055 is a deficient number, since it is larger than the sum of its proper divisors (101111017).

505555055 is a wasteful number, since it uses less digits than its factorization.

505555055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101111016.

The product of its (nonzero) digits is 78125, while the sum is 35.

The square root of 505555055 is about 22484.5514742901. The cubic root of 505555055 is about 796.6290738336.

The spelling of 505555055 in words is "five hundred five million, five hundred fifty-five thousand, fifty-five".