1056550505 has 4 divisors (see below), whose sum is σ = 1267860612. Its totient is φ = 845240400.

The previous prime is 1056550483. The next prime is 1056550511. The reversal of 1056550505 is 5050556501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124835929 + 931714576 = 11173^2 + 30524^2 .

It is not a de Polignac number, because 1056550505 - 2¹² = 1056546409 is a prime.

It is a super-2 number, since 2×1056550505² = 2232597939231510050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105655046 + ... + 105655055.

It is an arithmetic number, because the mean of its divisors is an integer number (316965153).

Almost surely, 2^1056550505 is an apocalyptic number.

It is an amenable number.

1056550505 is a deficient number, since it is larger than the sum of its proper divisors (211310107).

1056550505 is an equidigital number, since it uses as much as digits as its factorization.

1056550505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211310106.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 1056550505 is about 32504.6228250691. The cubic root of 1056550505 is about 1018.5055986920.

The spelling of 1056550505 in words is "one billion, fifty-six million, five hundred fifty thousand, five hundred five".