1005550505 has 8 divisors (see below), whose sum is σ = 1210081032. Its totient is φ = 802160128.

The previous prime is 1005550499. The next prime is 1005550519. The reversal of 1005550505 is 5050555001.

It can be written as a sum of positive squares in 4 ways, for example, as 2181529 + 1003368976 = 1477^2 + 31676^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005550505 is a prime.

It is a super-2 number, since 2×1005550505² = 2022263636211510050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283094 + ... + 286623.

It is an arithmetic number, because the mean of its divisors is an integer number (151260129).

Almost surely, 2^1005550505 is an apocalyptic number.

It is an amenable number.

1005550505 is a deficient number, since it is larger than the sum of its proper divisors (204530527).

1005550505 is an equidigital number, since it uses as much as digits as its factorization.

1005550505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570075.

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

The square root of 1005550505 is about 31710.4163485754. The cubic root of 1005550505 is about 1001.8467557272.

The spelling of 1005550505 in words is "one billion, five million, five hundred fifty thousand, five hundred five".