1056605505 has 16 divisors (see below), whose sum is σ = 1790014464. Its totient is φ = 530374400.

The previous prime is 1056605497. The next prime is 1056605567. The reversal of 1056605505 is 5055066501.

It is not a de Polignac number, because 1056605505 - 2³ = 1056605497 is a prime.

It is a super-2 number, since 2×1056605505² = 2232830386392610050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2071521 + ... + 2072030.

It is an arithmetic number, because the mean of its divisors is an integer number (111875904).

Almost surely, 2^1056605505 is an apocalyptic number.

1056605505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1056605505 is a deficient number, since it is larger than the sum of its proper divisors (733408959).

1056605505 is a wasteful number, since it uses less digits than its factorization.

1056605505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143576.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 1056605505 is about 32505.4688475647. The cubic root of 1056605505 is about 1018.5232715610.

The spelling of 1056605505 in words is "one billion, fifty-six million, six hundred five thousand, five hundred five".