1000561061 has 12 divisors (see below), whose sum is σ = 1065147552. Its totient is φ = 939695808.

The previous prime is 1000561021. The next prime is 1000561063. The reversal of 1000561061 is 1601650001.

It is a happy number.

It is not a de Polignac number, because 1000561061 - 2¹⁰ = 1000560037 is a prime.

It is a super-2 number, since 2×1000561061² = 2002244873578891442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000561063) 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 11 ways as a sum of consecutive naturals, for example, 141926 + ... + 148808.

It is an arithmetic number, because the mean of its divisors is an integer number (88762296).

Almost surely, 2^1000561061 is an apocalyptic number.

It is an amenable number.

1000561061 is a deficient number, since it is larger than the sum of its proper divisors (64586491).

1000561061 is an equidigital number, since it uses as much as digits as its factorization.

1000561061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420 (or 7403 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1000561061 is about 31631.6465110497. The cubic root of 1000561061 is about 1000.1869853676.

The spelling of 1000561061 in words is "one billion, five hundred sixty-one thousand, sixty-one".