1050505605 has 20 divisors (see below), whose sum is σ = 1883129292. Its totient is φ = 560269440.

The previous prime is 1050505597. The next prime is 1050505607. The reversal of 1050505605 is 5065050501.

1050505605 is a `hidden beast` number, since 1 + 0 + 5 + 0 + 50 + 5 + 605 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 759939489 + 290566116 = 27567^2 + 17046^2 .

It is not a de Polignac number, because 1050505605 - 2³ = 1050505597 is a prime.

It is a super-2 number, since 2×1050505605² = 2207124052272832050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1050505607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1296516 + ... + 1297325.

Almost surely, 2^1050505605 is an apocalyptic number.

1050505605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1050505605 is a deficient number, since it is larger than the sum of its proper divisors (832623687).

1050505605 is an equidigital number, since it uses as much as digits as its factorization.

1050505605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593858 (or 2593849 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 1050505605 is about 32411.5042076112. The cubic root of 1050505605 is about 1016.5594719314.

The spelling of 1050505605 in words is "one billion, fifty million, five hundred five thousand, six hundred five".