505555377 has 8 divisors (see below), whose sum is σ = 679382016. Its totient is φ = 334382832.

The previous prime is 505555327. The next prime is 505555381. The reversal of 505555377 is 773555505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505555377 - 2¹⁰ = 505554353 is a prime.

It is a super-2 number, since 2×505555377² = 511172478427224258, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (505555327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663078 + ... + 663839.

It is an arithmetic number, because the mean of its divisors is an integer number (84922752).

Almost surely, 2^505555377 is an apocalyptic number.

It is an amenable number.

505555377 is a deficient number, since it is larger than the sum of its proper divisors (173826639).

505555377 is a wasteful number, since it uses less digits than its factorization.

505555377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327047.

The product of its (nonzero) digits is 459375, while the sum is 42.

The square root of 505555377 is about 22484.5586347609. The cubic root of 505555377 is about 796.6292429643.

The spelling of 505555377 in words is "five hundred five million, five hundred fifty-five thousand, three hundred seventy-seven".