505000555 has 16 divisors (see below), whose sum is σ = 643961664. Its totient is φ = 378864640.

The previous prime is 505000549. The next prime is 505000583. The reversal of 505000555 is 555000505.

It is not a de Polignac number, because 505000555 - 2⁵ = 505000523 is a prime.

It is a Duffinian number.

505000555 is a modest number, since divided by 555 gives 505 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13314 + ... + 34456.

It is an arithmetic number, because the mean of its divisors is an integer number (40247604).

Almost surely, 2^505000555 is an apocalyptic number.

505000555 is a deficient number, since it is larger than the sum of its proper divisors (138961109).

505000555 is a wasteful number, since it uses less digits than its factorization.

505000555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21446.

The product of its (nonzero) digits is 3125, while the sum is 25.

The square root of 505000555 is about 22472.2174028288. The cubic root of 505000555 is about 796.3377159064.

The spelling of 505000555 in words is "five hundred five million, five hundred fifty-five", and thus it is an aban number.