1005505 has 4 divisors (see below), whose sum is σ = 1206612. Its totient is φ = 804400.

The previous prime is 1005503. The next prime is 1005527. The reversal of 1005505 is 5055001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 190096 + 815409 = 436^2 + 903^2 .

It is not a de Polignac number, because 1005505 - 2¹ = 1005503 is a prime.

It is a super-2 number, since 2×1005505² = 2022080610050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005503) 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, 100546 + ... + 100555.

It is an arithmetic number, because the mean of its divisors is an integer number (301653).

2^1005505 is an apocalyptic number.

It is an amenable number.

1005505 is a deficient number, since it is larger than the sum of its proper divisors (201107).

1005505 is an equidigital number, since it uses as much as digits as its factorization.

1005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201106.

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 1005505 is about 1002.7487222630. The cubic root of 1005505 is about 100.1831643035.

The spelling of 1005505 in words is "one million, five thousand, five hundred five".