1056005566 has 48 divisors (see below), whose sum is σ = 2028155760. Its totient is φ = 407742720.

The previous prime is 1056005563. The next prime is 1056005591. The reversal of 1056005566 is 6655006501.

It is a super-2 number, since 2×1056005566² = 2230295510845960712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056005563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117480 + ... + 126148.

It is an arithmetic number, because the mean of its divisors is an integer number (42253245).

Almost surely, 2^1056005566 is an apocalyptic number.

1056005566 is a deficient number, since it is larger than the sum of its proper divisors (972150194).

1056005566 is a wasteful number, since it uses less digits than its factorization.

1056005566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8809 (or 8802 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 1056005566 is about 32496.2392593358. The cubic root of 1056005566 is about 1018.3304630757.

The spelling of 1056005566 in words is "one billion, fifty-six million, five thousand, five hundred sixty-six".