1056115566 has 24 divisors (see below), whose sum is σ = 2496273624. Its totient is φ = 320034960.

The previous prime is 1056115559. The next prime is 1056115609. The reversal of 1056115566 is 6655116501.

It is a super-2 number, since 2×1056115566² = 2230760177495000712, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1056115566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2666761 + ... + 2667156.

It is an arithmetic number, because the mean of its divisors is an integer number (104011401).

Almost surely, 2^1056115566 is an apocalyptic number.

1056115566 is an abundant number, since it is smaller than the sum of its proper divisors (1440158058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1056115566 is a wasteful number, since it uses less digits than its factorization.

1056115566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333936 (or 5333933 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1056115566 is about 32497.9317188033. The cubic root of 1056115566 is about 1018.3658203583.

The spelling of 1056115566 in words is "one billion, fifty-six million, one hundred fifteen thousand, five hundred sixty-six".