1056006505 has 8 divisors (see below), whose sum is σ = 1280272392. Its totient is φ = 836095488.

The previous prime is 1056006499. The next prime is 1056006517. The reversal of 1056006505 is 5056006501.

It can be written as a sum of positive squares in 4 ways, for example, as 221027689 + 834978816 = 14867^2 + 28896^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1056006505 - 2¹⁷ = 1055875433 is a prime.

It is a super-2 number, since 2×1056006505² = 2230299477204630050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1088182 + ... + 1089151.

It is an arithmetic number, because the mean of its divisors is an integer number (160034049).

Almost surely, 2^1056006505 is an apocalyptic number.

It is an amenable number.

1056006505 is a deficient number, since it is larger than the sum of its proper divisors (224265887).

1056006505 is an equidigital number, since it uses as much as digits as its factorization.

1056006505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177435.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 1056006505 is about 32496.2537071583. The cubic root of 1056006505 is about 1018.3307649087.

The spelling of 1056006505 in words is "one billion, fifty-six million, six thousand, five hundred five".