1005500209 has 16 divisors (see below), whose sum is σ = 1195038720. Its totient is φ = 827749440.

The previous prime is 1005500189. The next prime is 1005500231. The reversal of 1005500209 is 9020055001.

It is not a de Polignac number, because 1005500209 - 2¹¹ = 1005498161 is a prime.

It is a super-2 number, since 2×1005500209² = 2022061340598087362, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1005500209.

It is not an unprimeable number, because it can be changed into a prime (1005500239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25807 + ... + 51739.

It is an arithmetic number, because the mean of its divisors is an integer number (74689920).

Almost surely, 2^1005500209 is an apocalyptic number.

It is an amenable number.

1005500209 is a deficient number, since it is larger than the sum of its proper divisors (189538511).

1005500209 is a wasteful number, since it uses less digits than its factorization.

1005500209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26160.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1005500209 is about 31709.6232869456. The cubic root of 1005500209 is about 1001.8300518672.

The spelling of 1005500209 in words is "one billion, five million, five hundred thousand, two hundred nine".