1005105550 has 12 divisors (see below), whose sum is σ = 1869496416. Its totient is φ = 402042200.

The previous prime is 1005105547. The next prime is 1005105557. The reversal of 1005105550 is 555015001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005105557) 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 5 ways as a sum of consecutive naturals, for example, 10051006 + ... + 10051105.

It is an arithmetic number, because the mean of its divisors is an integer number (155791368).

Almost surely, 2^1005105550 is an apocalyptic number.

1005105550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1005105550 is a deficient number, since it is larger than the sum of its proper divisors (864390866).

1005105550 is a wasteful number, since it uses less digits than its factorization.

1005105550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20102123 (or 20102118 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 1005105550 is about 31703.3996599734. The cubic root of 1005105550 is about 1001.6989618938.

The spelling of 1005105550 in words is "one billion, five million, one hundred five thousand, five hundred fifty".