1005500555 has 8 divisors (see below), whose sum is σ = 1217279232. Its totient is φ = 797281408.

The previous prime is 1005500477. The next prime is 1005500599. The reversal of 1005500555 is 5550055001.

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

It is a cyclic number.

It is not a de Polignac number, because 1005500555 - 2²⁰ = 1004451979 is a prime.

It is a super-2 number, since 2×1005500555² = 2022062732210616050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889259 + ... + 890388.

It is an arithmetic number, because the mean of its divisors is an integer number (152159904).

Almost surely, 2^1005500555 is an apocalyptic number.

1005500555 is a deficient number, since it is larger than the sum of its proper divisors (211778677).

1005500555 is a wasteful number, since it uses less digits than its factorization.

1005500555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779765.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 1005500555 is about 31709.6287427021. The cubic root of 1005500555 is about 1001.8301667795.

Adding to 1005500555 its reverse (5550055001), we get a palindrome (6555555556).

The spelling of 1005500555 in words is "one billion, five million, five hundred thousand, five hundred fifty-five".