1061558671 has 4 divisors (see below), whose sum is σ = 1117430200. Its totient is φ = 1005687144.

The previous prime is 1061558669. The next prime is 1061558681. The reversal of 1061558671 is 1768551601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1768551601 = 43 ⋅41129107.

It is a cyclic number.

It is not a de Polignac number, because 1061558671 - 2¹ = 1061558669 is a prime.

It is a super-2 number, since 2×1061558671² = 2253813623950572482, 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 (1061558651) 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 3 ways as a sum of consecutive naturals, for example, 27935736 + ... + 27935773.

It is an arithmetic number, because the mean of its divisors is an integer number (279357550).

Almost surely, 2^1061558671 is an apocalyptic number.

1061558671 is a deficient number, since it is larger than the sum of its proper divisors (55871529).

1061558671 is an equidigital number, since it uses as much as digits as its factorization.

1061558671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55871528.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 1061558671 is about 32581.5694987212. The cubic root of 1061558671 is about 1020.1123389662.

The spelling of 1061558671 in words is "one billion, sixty-one million, five hundred fifty-eight thousand, six hundred seventy-one".