1000556105 has 16 divisors (see below), whose sum is σ = 1209179664. Its totient is φ = 794787840.

The previous prime is 1000556083. The next prime is 1000556113. The reversal of 1000556105 is 5016550001.

1000556105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 51423241 + 949132864 = 7171^2 + 30808^2 .

It is not a de Polignac number, because 1000556105 - 2²⁶ = 933447241 is a prime.

It is a super-2 number, since 2×1000556105² = 2002225038505542050, 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 15 ways as a sum of consecutive naturals, for example, 867209 + ... + 868361.

It is an arithmetic number, because the mean of its divisors is an integer number (75573729).

Almost surely, 2^1000556105 is an apocalyptic number.

It is an amenable number.

1000556105 is a deficient number, since it is larger than the sum of its proper divisors (208623559).

1000556105 is a wasteful number, since it uses less digits than its factorization.

1000556105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1000556105 is about 31631.5681716857. The cubic root of 1000556105 is about 1000.1853339825.

The spelling of 1000556105 in words is "one billion, five hundred fifty-six thousand, one hundred five".