1055605566 has 16 divisors (see below), whose sum is σ = 2111624064. Its totient is φ = 351799704.

The previous prime is 1055605561. The next prime is 1055605589. The reversal of 1055605566 is 6655065501.

It is a super-2 number, since 2×1055605566² = 2228606221940360712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055605561) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23401 + ... + 51563.

It is an arithmetic number, because the mean of its divisors is an integer number (131976504).

Almost surely, 2^1055605566 is an apocalyptic number.

1055605566 is an abundant number, since it is smaller than the sum of its proper divisors (1056018498).

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

1055605566 is a wasteful number, since it uses less digits than its factorization.

1055605566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34415.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 1055605566 is about 32490.0841180813. The cubic root of 1055605566 is about 1018.2018704370.

It can be divided in two parts, 105560556 and 6, that multiplied together give a palindrome (633363336).

The spelling of 1055605566 in words is "one billion, fifty-five million, six hundred five thousand, five hundred sixty-six".