505555554322523 has 4 divisors (see below), whose sum is σ = 505883198882928. Its totient is φ = 505227909762120.

The previous prime is 505555554322417. The next prime is 505555554322603. The reversal of 505555554322523 is 325223455555505.

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

It is a cyclic number.

It is not a de Polignac number, because 505555554322523 - 2¹⁴ = 505555554306139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505555554822523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163822277888 + ... + 163822280973.

It is an arithmetic number, because the mean of its divisors is an integer number (126470799720732).

Almost surely, 2^{505555554322523} is an apocalyptic number.

505555554322523 is a deficient number, since it is larger than the sum of its proper divisors (327644560405).

505555554322523 is a wasteful number, since it uses less digits than its factorization.

505555554322523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327644560404.

The product of its (nonzero) digits is 112500000, while the sum is 56.

The spelling of 505555554322523 in words is "five hundred five trillion, five hundred fifty-five billion, five hundred fifty-four million, three hundred twenty-two thousand, five hundred twenty-three".