505500555 has 32 divisors (see below), whose sum is σ = 964537344. Its totient is φ = 221037696.

The previous prime is 505500553. The next prime is 505500599. The reversal of 505500555 is 555005505.

It is not a de Polignac number, because 505500555 - 2¹ = 505500553 is a prime.

It is a super-2 number, since 2×505500555² = 511061622210616050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (505500551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102244 + ... + 107073.

It is an arithmetic number, because the mean of its divisors is an integer number (30141792).

Almost surely, 2^505500555 is an apocalyptic number.

505500555 is a deficient number, since it is larger than the sum of its proper divisors (459036789).

505500555 is a wasteful number, since it uses less digits than its factorization.

505500555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209355.

The product of its (nonzero) digits is 15625, while the sum is 30.

The square root of 505500555 is about 22483.3394983930. The cubic root of 505500555 is about 796.6004466549.

The spelling of 505500555 in words is "five hundred five million, five hundred thousand, five hundred fifty-five".